World IN BRIEF : WASHINGTON, D.C. : Clinton Signs Bill on Cuba Sanctions

President Clinton signed a bill tightening U.S. sanctions on Cuba, saying he did so in the name of four Florida-based pilots killed when their two planes were downed by Cuba last month in a “brutal and cruel act.” Clinton had opposed the measure before the planes were shot down. Under the Helms-Burton Act, Cuban exiles whose property was expropriated by Fidel Castro’s Communist government will have a right to sue foreign firms using, or “trafficking” in, that property. The measure has been criticized by many of America’s allies.