The phrase "a new escalation" is correct and usable in written English.
It can be used to describe an increase in intensity or severity of a situation, often in contexts such as conflict, negotiations, or crises.
Example: "The recent events have led to a new escalation in tensions between the two countries."
Alternatives: "a fresh increase" or "a recent intensification".
Such an attack would have been a new escalation, but Turkish officials later suggested they had not been purposely targeted.
On Wednesday, army defectors allied with the Syrian opposition attacked a military intelligence facility near Damascus in a new escalation of the conflict.
American military commanders have publicly cautioned that a rapid withdrawal of troops risks a new escalation of sectarian violence, which has been substantially reduced in recent months.
Such threats signal a new escalation in tactics used by disgruntled French workers after episodes in which managers were detained by employees on company premises.
The attack marked a new escalation in the group's bloody six-year campaign to establish a hardline Islamic caliphate in northeast Nigeria, which borders Cameroon, Chad and Niger, a campaign that has killed some 13,000 people since 2009.
The murders of three teenage yeshiva students in the West Bank in June 2014 for which Netanyahu held Ḥamās responsible brought a new escalation of tension in and around the Gaza Strip.
Fortunately, President Obama recently demonstrated at the Nuclear Security Summit an awareness of "the potential for ramping up new and more deadly and more effective systems that end up leading to a whole new escalation of the arms race".
We then analyze the reasons why unescalatable locks are generated and propose a new lock escalation method, adaptive lock escalation, which controls lock escalation based on the number of unescalatable locks.
Hackers caused a power outage in Ukraine during holiday season, researchers say, signalling a potentially troubling new escalation in digital attacks.
This new escalation in hostility the continuation of a sharp trend toward political polarization in recent decades—has alarmed America's pundit class.
While U.S. politicians nibble at the edges of this real crisis, U.S. troops pay the bloody price, a price that's gotten much worse with the arrival of the new escalation policy over the course of this year.
