内容摘要：The president and vice president traditionally speak at one of the military service academies every year. Trump is scheduled to speak at West Point’s commencement Saturday.

The president and vice president traditionally speak at one of the military service academies every year. Trump is scheduled to speak at West Point’s commencement Saturday.

AP correspondent Julie Walker reports on a tugboat powered by ammonia.Ammonia is widely used for fertilizer, so there is already infrastructure in place for handling and transporting it. Ton for ton, it can hold more energy than hydrogen, and it can be stored and distributed more easily.

“It certainly has the potential to be a main or even the main fuel,” Fahnestock said. “It has a potentially very friendly greenhouse gas footprint.”The tank that will hold ammonia and power the NH3 Kraken sits on the tugboat on Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)The tank that will hold ammonia and power the NH3 Kraken sits on the tugboat on Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)

The tank that will hold ammonia and power the NH3 Kraken sits on the tugboat on Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)The tank that will hold ammonia and power the NH3 Kraken sits on the tugboat on Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)

Ammonia does have drawbacks. It’s toxic. Nearly all of it currently is made from natural gas in a process that is harmful for the climate. And burning it has to be engineered carefully or it, too, yields traces of a powerful greenhouse gas.

Amogy’s technology is different.“He and I will meet, and I think we’ll solve it, or maybe not,” Trump said. “At least we’ll know. And if we don’t solve it, it’ll be very interesting.”

All along, Zelenskyy’s message, directed at the Trump administration, has been: The Russian leader cannot be trusted.It’s a rhetorical game of pingpong in which both Kyiv and Moscow try to outmaneuver the other vis-à-vis the U.S. But the political theatrics are underscored by

. In this war of attrition against Russia’s invasion, Ukraine’s position is poised to grow weaker as time goes on, unless powerful sanctions are imposed against Moscow and the U.S. continues arms deliveries.“He is in a difficult situation because behind him is a whole nation of people who are suffering,” said Oleksandr Merezkho, a lawmaker in Zelenskyy’s party. “We are playing (along), we are trying to do everything we can because we don’t want to lose the support of the U.S. We don’t want to be accused that it was our fault.”