SEOUL, South Korea (AP) — U.S. President Donald Trump sent North Korean leader Kim Jong Un an “excellent” letter, the North’s state-run news agency reported Sunday, quoting Kim as saying he would “seriously contemplate” the content. The White House press secretary, Sarah Sanders, said Trump sent a letter and “correspondence between the two leaders has been ongoing.” Formal talks between the U.S. and North Korea broke down after a failed summit between Kim and Trump in February in Vietnam. But earlier in June Trump told U.S. reporters he received a “beautiful” letter from Kim, without revealing what was written. In...