Russia is ramping up nightly drone attacks on Ukrainian cities and civilian infrastructure, and as it rapidly increases its production of those weapons its strikes are intensifying.

The attack, part of the most intense Russian drone and missile strikes on Ukraine in more than a month, punctuated Moscow’s brick-wall diplomacy, which is grinding President Donald Trump’s peace effo...

On Tuesday, U.K. Prime Minister Keir Starmer hailed the possibility of NATO-backed security guarantees as a “breakthrough,” noting that the U.S. was now working “at pace” with 30 or so other countries, which he called a “coalition of the willing,” to help Ukraine.

Russia’s top diplomat on Wednesday said the country would insist on being a part of any future security guarantees for Ukraine, a condition that European and Ukrainian officials widely see as absurd....