The Obama administration is proposing more than $3.4 billion in military spending in the region next year — far more than the $786 million in the current budget — and will position new equipment and have a full armored combat brigade deployed somewhere in the region, on a rotating basis, at all times.

Administration officials argued that the rotating deployment would keep the United States in compliance with the NATO-Russia Founding Act of 1997, under which both sides promised not to station large numbers of troops along borders shared by Russia and members of the alliance.

Government leaders in Poland and the Baltic nations have argued that Russia’s aggressive actions in Ukraine have already violated the act, and they urged American leaders to station permanent troops in the region. Poland’s new right-wing government, in particular, has made the deployment of NATO troops in the region a major foreign policy goal.

This summer’s NATO summit meeting will be held in Warsaw, and the American proposal anticipates some of the demands likely to be raised.

“It seems that they have finally realized that their previously weaker interest in this part of Europe hadn’t done them any favors,” said Lukasz Kister, a security and foreign policy expert from the Collegium Civitas in Warsaw. “This decision will try to make up for that.”

Radko Hokovsky, executive director of European Values, a research organization in Prague, said he hoped that allies in Europe would respond to the United States’ example. “Europeans really need to step up their defense efforts so that they are not like a child always waiting for an American mom to come save them because they are so lazy to spend their wealth on their own security,” he said.