U.S. President Donald Trump called for a determined response to North Korea after talks with South Korean President Moon Jae-in on Friday at which he emphasized the importance of their alliance but took aim at Seoul over trade and sharing the cost of defense. Trump said the United States was renegotiating what he characterized as a "rough" trade deal with South Korea agreed five years ago by his predecessor, Barack Obama, and reiterated that an era of "strategic patience" over North Korea's nuclear and ballistic missile programs had ended. "Together we are facing the threat of the reckless and brutal regime in North Korea. The nuclear and ballistic missile programs of that regime requires a determined response," Trump said while standing alongside Moon in the White House Rose Garden. "We're working closely with South Korea and Japan, as well as partners around the world, on a range of diplomatic, security and economic measures to protect our allies and our own citizens from this menace known as North Korea," he said. Trump called on regional powers to implement sanctions and demand North Korea "choose a better path and do it quickly."