British PM set to call on 25 world leaders to boost Kyiv in lead-up to any peace deal or be ready to ramp up pressure on RussiaMikhail Kasyanov, Vladimir Putin’s first prime minister and now an opponent of the Russian president, said Moscow was only interested in a conditional ceasefire, reports the PA news agency.He told BBC Radio 4’s Today programme:He rejected this proposal for an unconditional ceasefire, he wants conditional, he wants a ceasefire on his terms.”I don’t believe this, but he could accept – if his terms and conditions are accepted, for instance the stop of military supplies