In The Green Line (2004), Alÿs walked along the 1948 armistice line between Israel and Palestine, trailing a line of green paint behind him. (groundwork.art)
Though Israel's armistice agreements with Jordan stressed the mutability of borders, the international community does not recognize Israel's annexation of East Jerusalem. (politics.stackexchange.com)
North Korea just annulled the 1953 armistice ending its war with South Korea. (planet3.org)