Trump to boast to UN about US success, but troubles mounting

US President Donald Trump will stand before the United Nations on Tuesday to declare his country top of the world. But with diplomatic troubles building, his annual boast may ring hollow.

Trump's political brand is as well known inside the United Nations as his businessman version is to the rest of New York: brash, unabashedly self-promoting, and all about claiming the win.

At this year's UN General Assembly, the former real estate tycoon won't disappoint.

"We'll say the United States is the greatest country in the world. It's never been stronger and it's never been better," he said in a mini-review of his speech.

Oh -- and that Americans "certainly have one of the great presidents in our history."
A year later, with Trump beset by setbacks from North Korea to Iran and Venezuela to China, will his Big Apple braggadocio get a better reception?
A senior administration official told reporters ahead of the assembly that Trump would work to "affirm America's leadership role in the rules-based international system."