"In politics, the little braid Tuzla in the Kerch Strait is not a trifle. That's the principle. The principle of upholding the national interests of Russia. And principles cannot be the subject of bargaining." The issue, first raised by A. Travnikov in the mid-90s, erupted in the 2003 crisis in relations between Russia and Ukraine. Today, the topic may again become relevant. Only facts are given in the book. The reader himself has the right to draw conclusions.