Seoul, June 24 (IANS) US Deputy Secretary of State Kurt Campbell expressed "strong" support for "any measures" taken by South Korea in response to the expanding illegal military cooperation between Russia and North Korea in phone talks with his South Korean counterpart on Monday, Seoul's foreign ministry said. Campbell "expressed strong support for any measures taken by the South Korean side in response to the security threats posed by the illegal military cooperation between Russia and North Korea," Seoul's foreign ministry said in a release. They also expressed "grave concern" over the deepening military ties between the two isolated states and "strongly condemned" them, the ministry said. South Korea said it will reconsider its stance on the arms supply to Ukraine, indicating a possible policy shift to providing lethal aid to Kyiv. The two sides also exchanged opinions on the outcome of the security dialogue South Korea had with China last week, the ministry added.