Russian President Vladimir Putin said Thursday he “does not rule out” sending weapons to North Korea, where he signed a mutual defense pact this week, while also warning South Korea not to arm Ukraine. On a trip to Vietnam, Putin said Moscow could send missiles to North Korea, calling it repercussions for the West supplying Ukraine. “Those who send these [missiles to Ukraine], think that they are not fighting us, but I said, including in Pyongyang, that we then reserve the right to supply weapons to other regions of the world, with regard to our agreements with the DPRK,” Putin said. “I do not…