By Guy Faulconbridge LONDON (Reuters) – President Vladimir Putin warned the United States in an interview broadcast on Sunday that Russia would strike new targets if the West supplied longer-range missiles to Ukraine for use in high-precision mobile rocket systems. The United States has ruled out sending its own or NATO forces to Ukraine but Washington and its European allies have supplied weapons to Kyiv such as drones, Howitzer heavy artillery, anti-aircraft Stinger and anti-tank Javelin missiles. President Joe Biden last week said Washington would supply Ukraine with M142 High Mobility Arti…