Western sanctions on Russia following its invasion of Ukraine are having a “dramatic impact” that is “unprecedented,” says US Secretary of State Antony Blinken. “We see the rouble going through the floor, we see Russia’s credit rating coming basically to zero, to junk status, as we would call it. We see its stock market shot down, we see an exodus of virtually every leading company form Russia. All of these things are happening and they are happening in real-time,” he said during a visit to Lithuania. He also said efforts to deny technology transfers to Russia will weigh on its economy in the …