Putin won't end the war under economic pressure from sanctions and Ukrainian attacks on Russian refineries and logistics networks, sources said. Russia is preparing to escalate attacks on Ukraine after concluding that negotiations for a peace deal have reached a dead end, according to three people close to the Kremlin. Key points and original sources are listed below.

• Putin won't end the war under economic pressure from sanctions and Ukrainian attacks on Russian refineries and logistics networks, sources said.S1

• Russia is preparing to escalate attacks on Ukraine after concluding that negotiations for a peace deal have reached a dead end, according to three people close to the Kremlin. Bloomberg's Michael Heath shares what we know. (Source: Bloomberg)S2