A FTER WEEKS of nebulous ceasefire talks at the urging of a semi-engaged President Donald Trump, the war between Russia and Ukraine is intensifying again in savage style and with escalating stakes. In the last two weeks there have been record-breaking Russian missile strikes on Ukrainian cities and spectacular Ukrainian drone raids on Russia’s strategic bomber force,

President Donald Trump said Wednesday that Vladimir Putin intends to retaliate “very strongly” against Ukraine for a surprise drone strike on Russian airfields over the weekend, a declaration that provoked alarm in Washington and abroad even as Trump touted his efforts to bring peace to the region.

ANALYSIS: Russia is stepping up its summer offensive both on the ground and in the air but support from Europe and sophisticated drone warfare could help Ukraine hold Moscow back. World affairs editor