Britain and Germany are set to pledge new air defense systems for Ukraine as the UK government pushes for a “50-day drive” to arm Kyiv and bring Russian President Vladimir Putin to the negotiating table.

Putin’s refusal to compromise on Ukraine, say analysts, is a colossal error costing Russia regional influence, lucrative energy markets and its place in the world.

At least 140 flights have been cancelled and Moscow’s major airports were closed after Ukraine launched a drone strike on Russia.The four major airports serving the capital were disrupted and more than 130 flights also had to be redirected,

US President Donald Trump’s 50-day pause ahead of possible secondary sanctions on Russia gifts the Kremlin a window to exploit the incremental gains of recent weeks in Ukraine’s east.

Trump has grown increasingly critical of Russian leader Vladimir Putin as a ceasefire in the war has not been worked out and Russia continues to bomb Ukraine.

A former Russian prime minister has said Vladimir Putin may be forced to agree a peace deal to end the war with Ukraine by the end of the year. Mikhail Kasyanov said Russia’s “contracting” economy meant the country’s president may have no option but to seek a settlement to stop the hostilities.

Zelensky offers Putin fresh peace talks after weeks of Moscow’s missile strikes - Zelensky said he had offered Putin fresh peace talks starting from next week but did not give any more details

President Donald Trump announced this week that the U.S. will send Patriot air-defense missiles to Ukraine and threatened new tariffs on Russia. Will Vladimir Putin back down? What should Trump's next move be? And what does the future hold for Ukraine? Newsweek contributors Daniel R. DePetris and Dan Perry debate: