Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. While US Relaxes Demands in S. Korea Cost-Sharing Talks, Gaps Remain William Gallo SEOUL - Harry Harris, the U.S. ambassador to South Korea, says Washington has softened its demand for how much Seoul should pay for the cost of the U.S. military presence here, but says a gap remains and that "time is of the essence." "We have some time left, [but] not a lot of time," Harris said Thursday, a day after a sixth round of cost-sharing negotiations ended in Washington with no breakthrough. For the second consecutive year, U.S. and South Korean negotiators were unable to reach an agreement before the cost-sharing deal expired at the end of the year. Both sides hope to eventually reach a deal that would retroactively cover the intervening weeks. Seoul's foreign ministry Thursday said both sides expanded their mutual understanding during the latest round of talks, but that there are still differences. Speaking to foreign correspondents at his residence, Harris said the chief U.S. negotiator has reduced the "top-line number" for how much Seoul should pay for the presence of the 28,500 troops. "He has compromised, so we are now waiting for the Korean side to do the same," said Harris. The U.S. had reportedly asked South Korea to increase the amount it pays by five times - a demand rejected by Seoul as unreasonable. The issue has created an awkward strain in a nearly 70-year-old alliance that both sides tout as "ironclad." Opinion polls show South Koreans overwhelmingly reject the U.S. demand but still support the alliance and want U.S. troops to stay. "I pay attention to South Korean public opinion - it's important," Harris said. However, he insisted there is no evidence the U.S. financial demands were detrimental to the overall relationship. "Financial demands only become detrimental if we can't reach an agreement," Harris said. Earlier this week, President Moon Jae-in said South Korea should contribute a "reasonable and fair amount," noting that any eventual deal will need to be approved by South Korea's National Assembly, its legislature. .