New York, Nov. 5 -- US President Donald Trump on Wednesday responded to newly elected New York City Mayor Zohran Mamdani with a brief post on Truth Social.

On his official account, Trump wrote, "And so it begins!", hours after Mamdani, the 34-year-old Democrat, directly addressed the President during his victory speech.

https://truthsocial.com/@realDonaldTrump/115495225031046506

Speaking to supporters, Mamdani had said, "Donald Trump, since I know you're watching, I have four words for you: turn the volume up!"

The exchange signals the start of a potentially high-stakes political clash between the Republican President and the Democratic socialist mayor.

Mamdani has vowed to make opposing Trump's immigration policies and "authoritaria...