Skripal standoff: Putin stonewalls, Trump hedges as U.K. deadline looms

Salisbury, where the attack on Skripal and his daughter took place. Photo: Matt Cardy / Getty Images

It has been nine days since ex-spy Sergei Skripal was poisoned with a nerve agent in the English town of Salisbury, and over 24 hours since U.K. Prime Minister Theresa May demanded that Russia explain how a Russian-manufactured nerve agent came to be used in an attempted murder on British soil. She has said that — absent a "credible response" from Russia by Wednesday — her government will conclude Russia carried out "an unlawful use of force against the United Kingdom" and respond accordingly.

What's next: Russia says it will ignore May's demands unless the U.K. provides a sample of the nerve agent used. Ian Bremmer, president of the Eurasia Group, tells Axios this attack will stiffen European spines on sanctions against Russia and could lead to a British boycott of the 2018 World Cup.