Russian President Vladimir Putin said on Thursday he would never declare a ceasefire in Ukraine without Kiev meeting certain preconditions. Ukraine could use a ceasefire to arm itself for new attacks, which is why a sustainable solution to the conflict must be negotiated first, Putin said. Putin pointed to earlier agreements on the Ukraine conflict from times before he ordered his full-scale invasion, which ultimately ended up “in the rubbish bin.” He was referring to the essentially frozen conflict after Moscow illegally annexed Crimea and the presence of Moscow-backed rebels in eastern Ukrai…