Charles Maines

Issued by the UK, France, Germany, the Netherlands and Sweden.

The report claims that analyses of samples from Navalny's remains conclusively showed traces of epibetidine, a toxin found in poisonous frogs in South America.

The report notes that only Russia's government had the means, motive, and opportunity to administer the poison to Navalny while he was serving out a lengthy prison sentence in Russia's Arctic.

The U.S.

says it has no reason to dispute those findings, yet Kremlin spokesman Dmitry Peskov dismissed the European allegations as biased and unfounded.

Russia's government has always maintained Navalny died by natural causes and declined to launch a criminal investigation into his death.

Charles Mainz, NPR News, Moscow.

The findings were announced by the United Kingdom, Sweden, France, Germany and the Netherlands, and based on samples from Navalny's remains smuggled out of Russia.

The report says analyses conclusively confirm the presence of epibatidine, a toxin found in poisoned dart frogs in South America, but not native to Russia itself.

The report says Russia's government had the, quote, means, motive, and opportunity to issue the poison while Navalny was in prison.

Navalny's widow, Yulia Navalna, said the new findings confirm what she and her husband's supporters have always insisted.

Navalny was murdered on order of Russian President Vladimir Putin.

The Kremlin maintains the opposition leader died from natural causes.

Charles Mainz, NPR News, Moscow.

Signed amid a period of detente with Russia in the Obama years, the New START treaty capped U.S.

and Russian nuclear warheads at 1,550 apiece.

Russian President Vladimir Putin had offered a de facto one-year extension to allow U.S.

and Russian negotiators time to work out a successor deal, yet President Trump never took up the offer, a decision the Kremlin said it regretted.

Trump administration officials are demanding that rising nuclear powers, particularly China, be part of any future arms control deal.

Meanwhile, both U.S.