Meeting with the 27 other European Union leaders in Salzburg, Austria (where you can bet Russian intelligence were watching closely), British Prime Minister Theresa May found herself in treacherous political waters this week.

This week it became abundantly clear that May is increasingly isolated in her position on Brexit. Not only did the EU reject her proposals, but May’s stance is very different from that of powerful interests in her own Conservative Party, and in the Labour Party opposition. Reflecting the tensions, on Thursday, European Commission President Donald Tusk said that October would bring the “moment of truth” on whether Britain could establish a formal partnership with the EU after Britain leaves the political union on March 29, 2019. If that deal isn’t reached, Britain will withdraw from the EU without a structured agreement. That’s an outcome May is keen to avoid, since most economists believe it would inflict a significant blow on the British economy.