By Gabriela Baczynska and John Chalmers BRUSSELS (Reuters) -The European Union is looking at an oil price cap, tighter curbs on high-tech exports to Russia and more sanctions against individuals, diplomats said on Thursday, in response to what the West condemned as a new escalation in Moscow’s war in Ukraine. The 27-nation EU was spurred into action by President Vladimir Putin’s nuclear rhetoric on Wednesday, announcement of a partial mobilisation for the war and support for plans to effectively annex parts of east Ukraine. EU foreign ministers agreed at an ad hoc meeting to prepare new sancti…