The king is the head of state and commander-in-chief of the army. He can declare war and peace, ratify laws and treaties, convene and close legislative sessions, call and postpone elections, dismiss the government and dissolve the parliament. The appointed government can also be dismissed through a majority vote of no confidence by the elected House of Representatives. After a bill is proposed by the government, it must be approved by the House of Representatives then the Senate, and becomes law after being ratified by the king. A royal veto on legislation can be overridden by a two-thirds vote in a joint session of both houses. The parliament also has the right of interpellation.