BERLIN, Jan 26 - Germany will supply 5,000 military helmets to Ukraine to help defend against a possible Russian invasion, it said on Wednesday - an offer Kyiv mayor and former world champion boxer Vitali Klitschko dismissed as "a joke" that left him "speechless,” Reuters reported.

Defense Minister Christine Lambrecht said Berlin, which has faced growing criticism of its refusal to supply arms to Ukraine as other Western countries have done, was responding to a request from the government in Kyiv.