US President Donald Trump at Nato summitThe TOI correspondent from Washington: MAGA boss Donald Trump, who built an entire political brand around ridiculing rivals as mentally unfit, sleepy, or low-energy, is finding himself at the center of increasingly uncomfortable questions about his own verbal stumbles and bloopers that critics say indicates a steady cognitive decline.The latest entry in what is being dubbed "Dozy Don Chronicles" came on Wednesday at the Nato summit, where Trump referred to Japan as the "Islamic Republic of Japan" and referred to Ukrainian President Volodymyr Zelensky as Vladimir Putin. “We have an aircraft carrier which is one of the most beautiful in the world. It's one of the biggest, the Abraham Lincoln. And a few months ago...we had 111 missiles shot by the Islam