Mutual defense pact signed by Putin and Kim Jong Un during Russian leader's trip to North Korea

North Korean leader Kim Jong Un and Russian President Vladimir Putin signed a mutual defense pact on Wednesday during Putin's trip to North Korea. 

The pact promises mutual defense in case either country is attacked. 

Putin referred to the pact as a "truly breakthrough document,” according to NBC News. The agreement covers goals for trade, security, investment, cultural and humanitarian ties. 

Kim referred to the agreement as peaceful, and one that moves the relationship between the two countries to an alliance.  

U.S. officials recently told NBC News that the agreement could involve the sharing of military technology to Pyongyang in exchange for supplies needed for Russia's military for the ongoing war in Ukraine. 

Kim Jung Un has already pledged his "full support" for Russia in its war against Ukraine.