Which country became a NATO member in June 2017?
Montenegro joined NATO on 5 June 2017. A poll in July 2015 found that 36.6 percent support membership, to 37.3 percent against, with sharp divisions between ethnic groups: 71.2 percent of Montenegrin Albanians and 68 percent of Montenegrin Bosniaks support membership, while only 11.3 percent of Montenegrin Serbs do.