Russia vows a response after Ukraine’s Security Service said aerial drones critically damaged the Russian tanker Qendil in the Mediterranean more than 2,000 kilometres from Ukraine; Putin made the threat during his annual Direct Line press conference where he also reprised a hardline negotiating posture.The SBU said Qendil was part of a ‘‘shadow fleet’’ used to evade sanctions and was last tracked off Crete near Libya; the attack comes as EU leaders approved a €90 billion support package for Ukraine while declining to seize an estimated €210 billion in frozen Russian assets, and Kyiv has also claimed a first-ever underwater drone strike on a Russian submarine.