Member states of NATO members and three former Yugoslav republics) from 12 March 1999 to 5 June 2017. NATO has added new members seven times since its founding in 1949, and since 2017 NATO has had 29 members. Twelve countries were part of the founding of NATO: Belgium, Canada, Denmark, France, Iceland, Italy, Luxembourg, the Netherlands, Norway, Portugal, the United Kingdom, and the United States. In 1952, Greece and Turkey became members of the Alliance, joined later by West Germany (in 1955) and Spain (in 1982). In 1990, with the reunification of Germany, NATO grew to include the former country of East Germany. Between
President of the Senate of Puerto Rico President of the Senate of Puerto Rico The President of the Senate of Puerto Rico () is the highest-ranking officer and the presiding officer of the Senate of Puerto Rico. The president has voting powers as it is elected amongst the own members of the Senate as established by Article III of the Constitution of Puerto Rico. The Constitution, however, does not establish its functions and since the Senate is the only body authorized by the Constitution to regulate its own internal affairs, the functions of the president vary from session to session—save being called "President" as the Constitution establishes.