BEIJING (AFP) - China on Tuesday demanded the United States undo the damage done by a meeting between President Barack Obama and the Dalai Lama, while lashing out anew over US arms sales to Taiwan. The latest angry barrage indicated tensions had not abated between Beijing and Washington an unwelcome sign for negotiators working on the thorny North Korea and Iran nuclear dossiers, who need the world powers to cooperate. The meeting last week in the White House Map Room between the Dalai Lama, Tibets exiled spiritual leader, and the US president who voiced support for Tibetan rights had already prompted Beijing to summon the US ambassador. China demands that the US side seriously regard Chinas position and take credible measures to undo the damage done, foreign ministry spokesman Qin Gang told reporters. He also urged Washington to take concrete measures to uphold the sound development of China-US relations, reiterating that they had been seriously affected by the Dalai Lamas White House visit and the Taiwan arms sales. This is something that we dont want to see and the US side should shoulder the full responsibility for this, Qin said. Ties between the two sides have been strained for months over a series of other issues from trade and currency disputes to the future in China of Google, after it fell victim to cyberattacks it says originated in the country. The Wall Street Journal reported that talks between the US Internet giant and Chinese officials were set to soon resume, although a Google China spokeswoman told AFP she had no knowledge of any such arrangement. Qin on Tuesday again rejected accusations that the Chinese government was behind the attacks on Google and stressed that foreign firms operating in China were bound to obey the laws of the land. Washington and Beijing are working with other world powers to coax North Korea back to six-party nuclear disarmament talks, which it abandoned nearly a year ago. The United States also is working to secure Chinas support for slapping new sanctions on Iran over its disputed atomic programme but Beijing an ally of Tehran with oil interests in the country has been reluctant to do so. Qin repeated a threat to sanction relevant US companies over the arms sales to Taiwan, which China views as part of its territory awaiting reunification, but refused to elaborate on which firms would be targeted or when. The Obama administration last month agreed to sell 6.4 billion dollars in weapons to the self-ruled island, which split from the mainland in 1949 after a bloody civil war. Washington is bound by law to sell weapons of a defensive nature to Taipei, but China views the sales as a threat to its territorial sovereignty. Beijing threatened to suspend military exchanges with Washington over the sales, but just hours before Obamas meeting with the Dalai Lama, the USS Nimitz aircraft carrier arrived for a visit in Hong Kong. The Tibetan monk, who advocates greater autonomy for Tibet under Chinese rule but is seen by Beijing as a separatist bent on independence for his Himalayan homeland, has long been a thorn in the side of Sino-US relations. He has met every sitting US president since George H.W. Bush in 1991, drawing Beijings ire. But Obama hoping to get relations with China off to a good start during his first year in office did not meet with the Dalai Lama last year ahead of his maiden trip to Beijing in November. In an interview with CNN talk show host Larry King broadcast Monday, the exiled monk said he feels love in his heart for China but believes hardliners in Beijing are in denial over their cultural suppression of his homeland. Sometimes you see some of these hardliners sort of policy, brutalist policy, sometimes I got some irritation for short moment, the Dalai Lama said during a visit to Los Angeles. Still, yes, I have to sort of make effort to keep love, said the monk, who fled Tibet into exile in 1959 and has since lived in India.