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

Russia is brushing aside Trump's 50-day tariff ultimatum to Vladimir Putin. On Tuesday, top officials dismissed the impact of new sanctions and secondary tariffs. Russia is already swamped by sanctions, but Trump also warned of new tariffs for its oil customers.

Though Trump's decision was welcomed by leaders in Kyiv, Ukrainians and their supporters abroad also raised concerns that the 50-day window may offer Russian President Vladimir Putin an opportunity to intensify his long-range strikes against Ukrainian cities and ongoing summer frontline offensive.