Serbia faces an even bigger problem: Trump imposes 500 percent tariffs targeting countries trading with Russia

Responding to journalists on Sunday about whether it is time for Congress to adopt measures aimed at pressuring Russia and President Vladimir Putin, Trump said: "I hear they are doing it, and that’s fine with me. They are passing a law… Republicans are introducing a law… very strict sanctions… for any country that does business with Russia. They may also add Iran… I suggested that myself," he said. "So, any country that does business with Russia will be very