Who can declare neutrality?

"On April 22, 1793, President George Washington issued a Neutrality Proclamation to define the policy of the United States in response to the spreading war in Europe. “The duty and interest of the United States require,” the Proclamation stated, “that they [the United States] should with sincerity and good faith adopt and pursue a conduct friendly and impartial toward the belligerent Powers.” The Proclamation warned Americans that the federal government would prosecute any violations of this policy by its citizens, and would not protect them should they be tried by a belligerent nation. [...]"

Explanation:

the proclamation of neutrality was a formal announcement issued by U.S president george washington on april 22, 1793 that delcared the nation neutral in the conflict between france and great britian.

Explanation:

the berlin blockade was an international crisis that arose from an attempt by the soviet union, in 1948–49, to force the western allied powers (the united states, the united kingdom, and france) to abandon their post-world war ii jurisdictions in west berlin. in march 1948 the allied powers decided to unite their different occupation zones of germany into a single economic unit. in protest, the soviet representative withdrew from the allied control council. coincident with the introduction of a new deutsche mark in west berlin (as throughout west germany), which the soviets regarded as a violation of agreements with the allies, the soviet occupation forces in eastern germany began a blockade of all rail, road, and water communications between berlin and the west. on june 24 the soviets announced that the four-power administration of berlin had ceased and that the allies no longer had any rights there.