Russian President Vladimir Putin has vowed to fulfil Moscow's goals in Ukraine and warned the West against deeper involvement in the fighting, saying that such a move risks a global nuclear conflict.Mr Putin's warning came in a state-of-the-nation address ahead of next month's election that he is all but certain to win, underlining his attempt to protect Russian gains in Ukraine.

Russian President Vladimir Putin has vowed to fulfil Moscow's goals in Ukraine and warned the West against deeper involvement in the fighting, saying that such a move risks a global nuclear conflict.Mr Putin's warning came in a state-of-the-nation address ahead of next month's election that he is all but certain to win, underlining his attempt to protect Russian gains in Ukraine.