How was george washington involved in foreign affairs

Washington issued a neutrality proclamation between Britain and France, which prevented taking sides in a full-on war.

Jay's Treaty was considered a low point in Washington foreign affairs, as it didn't accomplish much. The point of John Jay going to Britain was to stop British kidnapping of American sailors, but Jay's Treaty did nothing more than give the US "favored trade nation" status with Britain.

High point in Washington foreign affairs was Pinckney's treaty, made with Spain, that allowed the US to trade via the Mississippi River (huge thing at the time, as the Mississippi was THE hub for new world trade.