Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
identify whether following news is true or not

Input:
U.S. tip-off helped Russia thwart 'major' terrorist plot: White House;WASHINGTON (Reuters) - U.S. intelligence agencies provided advanced warning to Russia about a major terrorist plot in St. Petersburg, allowing Moscow to thwart an attack that could have killed  large numbers of people,  the White House said on Sunday.  President Vladimir V. Putin of Russia called President Donald J. Trump today to thank him for the advanced warning the United States intelligence agencies provided to Russia concerning a major terror plot in Saint Petersburg, Russia,  the White House said in a statement. ;December 17, 2017

### Response:
True news

### End