trump's tweet fofollowed remark by russian president pututin th russia shohould modernize its s nuclear weapons. some u.s. media say trump'p's remark may have been a reaction to putin's speech. they know that trump asserted during the presidential election that the u.s. has been slower to modernize its nuclear capabilities than russia. >>> syrian government forces say they've retaken complete control of aleppo. the northern city had been the largest stronghold of opposition groups. the syrian military issued a statement on thursday night, saying it has returned security and safety to aleppo as the last remaining opposition fighters withdrew from the city. it's seen as a turning point on the war on terrorism. government forces led the attack on aleppo with the help of russian airstrikes. they took almost all of the city under their control last week, prompting opposition forces to hand over their small enclave in eastern aleppo. >>> turkey has been playing a bigger role in the war in neighboring syria. it's seeing refugees flow across the border. in an attempt to deal with the issue, tur