Which action best completes the table?

NATO

Explanation:

The North Atlantic Treaty Organization is a military alliance currently consisting of 29 countries from North America and Europe, and that was established by the North Atlantic Treaty on April 1949, following World War II. The organization's purpose is to ensure collective defense and mutual protection, by the use of combined military power of members, in the case of any external party's armed attack.

a peace conference held after the surrender of japan

an international conference held near the end of world war ii

a meeting of the victorious nations after the defeat of germany

a summit meeting between the united states and the soviet union

d. direct