Russia and North Korea had a secret clause in their joint agreement, which involved North Korea sending a thousand soldiers to Ukraine, The Wall Street Journal informs. As reported by the media outlet, Russian President Vladimir Putin traveled to North Korea in June this year to work out the details of a military cooperation agreement. At that time, Pyongyang was allegedly ready to offer artillery shells in exchange for food and fuel. However, the agreement also included a secret clause allowing North Korea to send an initial wave of approximately 1,000 North Korean soldiers to Ukraine to lear…