Russian officials and commentators have shown little indication that Moscow is about to change course under new pressure.

The Kremlin said on Tuesday that U.S. President Donald Trump's recent statements, including a threat of sanctions on buyers of Russian exports, are serious and require analysis.

With his announcement to supply Ukraine with weapons worth up to $10 billion, President Donald Trump has effectively reversed his administration’s official policy on the NATO war against Russia. The new deliveries include, among other things, Patriot air defence systems and long-range missiles capable of reaching major Russian cities.

While Trump's new Russia policy announcement was welcomed by and large, there are still challenges ahead that will require more from America.

To appreciate the dramatic shift in President Donald Trump’s policy towards Ukraine, consider two scenes in the Oval Office, months apart:

President Trump is applying pressure on Moscow by restoring weapons pipelines to Ukraine and imposing tariffs on Russia’s trading partners, in an effort to weaken Russia’s war economy

President Donald Trump has reverted to his first-term foreign policy posturing, which was generally pretty great from a conservative perspective.

Readers respond to the president’s latest turn in the war. Also: President Trump and Rosie O’Donnell; New Yorkers’ health; travel medical kits.

President Trump’s threat to destroy Russia’s international oil market by Labor Day comes as President Putin pulls up the drawbridges for a closed economy that some call “fortress Russia.” Mr. Trump has given his Russian counterpart 50 days — until September 2 — to negotiate a peace deal with Ukraine.