The phrase "continue and escalate" is grammatically correct and can be used in written English.
It means to continue and intensify or increase something. Example: The conflict between the two nations shows no signs of resolution, and tensions are expected to continue and escalate in the coming months.
Parents interviewed yesterday complained that school officials failed to punish students who attacked other children, implicitly allowing attacks to continue and escalate.
But he linked the move to mounting anger among the opposition that they are being pressured to negotiate while Syrian government and Russian air attacks on rebel areas continue and escalate.
They will continue and escalate until Demonoid returns".
What's also obvious is that the attacks and negativity will only continue and escalate on both sides from here on.
"Without laying out the rules of the game for offensive responses and having direct consequences, cyber threats and intrusions from our adversaries will continue and escalate," McCaul said.
The Clintonites have already begun using the L-word, and that will surely continue and escalate; indeed, the issue of legitimacy can be (and likely will be) used as a rationale for Hillary's remaining in the race, despite the slim odds of her succeeding.
Apparent impunity for expatriate workers on Manus Island has been the source of continuing and escalating tension on the island.
But an accounting of exactly how many cases Ms. Madden had worked on or might have influenced is continuing, and escalating.
Why do we not have more troops in Afghanistan today to thwart the continued and escalating attacks from the Taliban and Al Qaeda? 6.
They know, as well, that as the intifada continues and escalates in violence, it is likely to erode the authority of the Palestinian government.
The violence continued and escalated, even though Sharon in late 2003 announced a "disengagement plan" that called for Israel to withdraw its soldiers and remove Israeli settlers from the Gaza Strip and parts of the West Bank.
