The Trump administration will move forward with the sale of high-tech aircraft to Nigeria for its campaign against Boko Haram Islamic extremists despite concerns over abuses committed by the African nation's security forces, according to U.S. officials.

Congress is expected to receive formal notification within weeks, setting in motion a deal with Nigeria that the Obama administration had planned to approve at the very end of Barack Obama's presidency. The arrangement will call for Nigeria to purchase up to 12 Embraer A-29 Super Tucano aircraft with sophisticated targeting gear for nearly $600 million, one of the officials said.

The officials were not authorized to discuss the terms of the sale publicly and requested anonymity to speak about internal diplomatic conversations.

President Trump placed a "warm" phone call to Philippines President Rodrigo Duterte, who has been widely criticized for a bloody anti-drug crackdown, and invited him to visit the White House, both countries said. 

A White House statement late Saturday said the conversation between the two leaders was “very friendly,” and added that the U.S.-Philippine alliance was “heading in a very positive direction.”

In the Philippines, a presidential spokesman said Trump had expressed understanding of challenges facing Duterte, “especially on the matter of dangerous drugs.”

President Trump is warning North Korea not to conduct another nuclear test, saying “we’ll see” if such a step would trigger a U.S. military response.

Trump, in an interview aired Sunday on CBS’ “Face the Nation,” also said he believes China’s President Xi Jinping, with whom he met weeks ago in Florida, has been using Beijing’s leverage to restrain North Korea’s mercurial leader, Kim Jong Un.

In the interview, Trump said neither he nor Xi would be happy if Kim were to conduct a nuclear test, which would be North Korea’s sixth. There were some expectations earlier this month that the hermit kingdom might conduct such a test in connection with patriotic holiday observances.

Tens of thousands of demonstrators converged around the White House and in other cities Saturday to protest what they said was the Trump administration's rejection of scientific claims on climate change and other environmental issues.

Trump has ordered the removal of numerous regulations imposed by previous administrations to protect the environment. That has motivated demonstrators to choose the president's 100th day in office for mass protests .

"I am standing up for climate change," said Lucy La Flamme, a Washington resident who held a large banner saying, "Resist," at the demonstration.

President Trump will skip the White House correspondents' dinner Saturday night and instead celebrate his 100th day in office doing what got him there: taking his populist message directly to supporters in rural Pennsylvania, the state he turned from blue to red in his surprise electoral college win in November.

The nighttime rally will start in Harrisburg at the same time as the annual press dinner in Washington and give Trump a chance to publicly prod one of his favorite foils, the White House press corps, many of whom will be attending the black-tie event. 

Trump's speech wasn't deliberately scheduled to upstage the dinner, a spokesman said.

The Pentagon has launched an investigation into whether friendly fire killed two U.S. Army Rangers during a night raid against an Islamic State compound in eastern Afghanistan this week.

Due to the fierce fighting, it's not clear if the two Rangers were shot by other Americans, by Afghan troops or by Islamic State fighters. U.S. commanders launched an official inquiry into the incident.

Sgt. Joshua Rodgers, 22, of Bloomington, Ill., and Sgt. Cameron Thomas, 23, of Kettering, Ohio, were killed during a three-hour battle Wednesday night in Nangarhar province.  

President Trump has treated the 100-day mark of his presidency with anxiety -- downplaying its significance, criticizing the media for under-appreciating his achievements and rolling out a flurry of public announcements aimed at conveying a sense of action.

On Friday, Day 99, Trump chose to celebrate the occasion with a stroll down memory lane with a subject he enjoys far more, his historic campaign victory.

Trump addressed about 10,000 members of the National Rifle Assn. at a meeting in Atlanta, becoming the first sitting president to stand before the group since Ronald Reagan in 1983.

Over the last 100 days, thousands have graded President Trump's performance in office. We reached out to some of those who submitted their appraisals, both supporters and opponents, to elaborate on their views. Here's what they had to say:

"I have four friends who have asked me not to contact them again.” – Michael Taylor

Taylor, of San Diego, didn’t vote for Trump. He actually penciled in Ohio Gov. John Kasich’s name. But from what he’s seen so far, Trump doesn’t deserve the flak he’s gotten.

Any single event can mislead when it comes to deciphering the political environment. Many of the more than 18,000 people clamoring for Hillary Clinton on the Ohio State University campus in mid-October — her biggest audience to that point in the presidential campaign — probably did not foresee her blowout defeat in the state less than a month later. Nor did many see Donald Trump surviving the cataclysmic events that enveloped his presidential campaign.

But, with appropriate caution, it’s safe to say that last week’s Los Angeles town halls featuring Dianne Feinstein and Kamala Harris spoke to the crosscurrents among Democrats today and the different approaches by — and difficulties facing — California’s two senators.

Both town halls were held in politically active African American churches south of downtown: Feinstein’s at First African Methodist Episcopal and Harris’ at Holman United Methodist Church. The locations appeared calculated to set a floor of civility. At First AME, Feinstein spoke of the warmth she’d felt from that congregation going back decades; at Holman, the Rev. Kelvin Sauls reminded those gathered to see Harris that “we are in a sacred place.”

On Saturday, President Trump will observe a milestone: his 100th day in office.

It’s also a millstone.

For nearly half a century, the marker has been used by pollsters, pundits and others who presume great wisdom to size up a fledgling White House and its still-green occupant.

President Trump has signed an executive order that could open large parts of the Pacific, Arctic and Atlantic oceans to new oil and gas drilling, creating yet another clash with California, where leaders are vowing they will do everything in their power to block new drilling off the state’s shores. 

Trump’s move, which is certain to face legal and political challenges, could undo a plan finalized late in President Obama’s second term that sought to limit fossil fuel development and fight climate change by not including new drilling leases off the coast of California or Alaska during the current five-year federal offshore plan, which extends through 2022.

Many leaders in California have long sought a permanent ban on new leasing offshore, and they reacted swiftly to the possibility that drilling could expand.