Nicaragua said it plans a large-scale military mobilization in the next few weeks to crush U.S.-backed rebels known as contras. Defense Minister Humberto Ortega told a news conference that the Sandinista government will use all its resources to crush the rightist rebellion. Asked whether Nicaragua will continue using Soviet-made MI-24 helicopter gunships, he replied, “We are using and will use all the weapons at our disposal in whatever part of the country. . . .” Ortega, brother of President Daniel Ortega, accused the CIA of trying to bolster rebel bases in northern Costa Rica.