By Kylie MacLellan LONDON (Reuters) -The British government will introduce new legislation this week to broaden the scope of sanctions it can apply to Russia in an effort to deter aggression towards Ukraine, Foreign Secretary Liz Truss said on Sunday. With tens of thousands of Russian troops massed near the Ukrainian border, Truss has previously refused to rule out personal sanctions against President Vladimir Putin if Russia invades Ukraine, something that Moscow denies it is planning to do. Western countries including Britain have threatened to impose https://www.reuters.com/markets/europe/h…