Anticipating a potential shift in U.S. policy if Donald Trump returns to the presidency, European diplomats are preparing to reinforce sanctions against Russia, sources say. The European Union aims to solidify its own measures, including “catch-all” clauses to prevent suspect goods from reaching Russia and expanding oil shipping restrictions.

European diplomats are preparing to underpin sanctions on Russia anticipating that a return of former U.S. president Donald Trump could undermine Western efforts to isolate Moscow, sources with knowledge of the discussions told Reuters.

Switzerland has decided not to fully implement the latest package of European Union sanctions against Russia, saying Swiss law already allows measures to prosecute subsidiaries of companies based in the country.

In a high-stakes move to secure their stance against Moscow, European leaders are racing to lock in long-term sanctions on Russia, fearing that former U.S. President Donald Trump’s potential return could lead Washington to soften its approach.

European diplomats are preparing to change the sanctions regime against Russia, as the possible return of Donald Trump, the 45th US President from the Republican Party, to the office could undermine Western efforts to isolate Moscow.