US President Donald Trump has waived a further slate of sanctions related to Russian fossil fuel sales, days before they were to take effect under a bill he signed into law last month.

Estimates of the cost of Su-34s cost vary, but Ukrainian military officials have previously estimated each aircraft can cost up to $50 million. Russia has lost more than 100 aircraft since starting the full-scale war with its neighbor in February 2022, according to a British intelligence assessment published on Friday.