"policy escalation" is correct and usable in written English.
You could use it to refer to a process by which a policy is implemented gradually over time, or when a policy is replaced with one with more stringent requirements. For example, "The company implemented a policy escalation in response to the new security regulations."
The Palestinian Authority called the shootings of the Palestinians on Friday "crimes" that it said confirmed the Israeli government's " policy of escalation," according to Reuters.
MOSCOW — Diplomatic rancor flared anew on Wednesday between Belarus and the European Union, as the former Soviet republic accused the bloc of pursuing a "dead-end" policy of escalation.
Success in the negotiations may depend in large part of our finding our way to back down gracefully from the war aims that were devised to support the policy of escalation.
But Merkel has come under intense fire at home for visiting a leader who is becoming increasingly authoritarian, and just two weeks ahead of a crucial general election which due to his policy of escalation towards the Kurds has effectively turned into a referendum on him.
A policy of escalation will do no better.
He was the author of cables to the State Department in late 2009, which carried a stinging rebuke to the conduct of the war and unconcealed hostility toward any new policy of escalation.
The U.S. policy of escalation and targeted drone killings in the border regions will do little to deter "terrorists" from attacking the United States but does a lot to promote political instability inside nuclear-armed Pakistan.
Emanuel said that while some may call these policies "de-escalation" tactics, the intention is to inject "more humanity" into policing practices and to train officers in the difference between when they can use a gun and when they should use a gun.
And yet that was when the United States embarked on a policy of military escalation.
If it ruled out failure and was prepared to intervene, it would Perpetuate a policy of military escalation.
