LONDON (Reuters) -Russian President Vladimir Putin’s recognition of breakaway regions of eastern Ukraine is a breach of international law, British Prime Minister Boris Johnson said on Monday. While Johnson was speaking, Putin signed a decree recognising the independence of the regions of Luhansk and Donetsk regions, upping the ante in a crisis the West fears could unleash a major war. “I gather just as I came into this press conference that Vladimir Putin has effectively announced that Russia is recognising the breakaway republics of Donetsk and Lugansk. This is plainly in breach of internatio…