The term liberal hawk refers to a politically liberal person who supports a hawkish, interventionist foreign policy.
Harry S. Truman signing a proclamation declaring a national emergency that initiates U.S. involvement in the Korean War
Liberal internationalism is a foreign policy doctrine that supports international institutions, open markets, cooperative security and liberal democracy. At its core, it holds that states should participate in international institutions that uphold rules-based norms, promote liberal democracy and facilitate cooperation on transnational problems.
Liberal internationalism emerged during the 19th century, notably under the auspices of British Foreign Secretary and Prime Minister Lord Palmerston
Liberal internationalism was developed in the second decade of the 20th century under U.S. President Woodrow Wilson