After becoming Incheon Mayor in 2010, Mayor Song declared Incheon to be the outpost of reconciliation, exchanges, peace and reunification of the two Koreas. Despite opposition from the government, he has insisted that there should be peace on the 5 islands near the Northern Limit Line in the West Sea for the economic development of Incheon. At the same time, Song has provided products to mothers and babies in North Korea through an agreement with the Korea Peace Foundation, which opened a door that was shut after the North's sinking of the "Cheonan".