President Biden called the damage to the"a deliberate act of sabotage," rebuking Russia's claim that the West was responsible for the explosions. The president said Friday that divers would eventually be sent to the pipelines, which were designed to bring gas from Russia to Europe, to determine what happened.
"It was a deliberate act of sabotage and the Russians are pumping out disinformation and lies," Biden said.
"At the appropriate moment, when things calm down, we're going to be sending divers down to find out exactly what happened. We don't know that yet exactly," he added.
Biden's comments come after Russian President Vladimir Putin on Friday accused the West of sabotaging the Russia-built natural gas pipelines under the Baltic Sea to Germany, a charge vehemently denied by the United States. Nordic nations said the undersea blasts that damaged the pipelines this week and have led to involved several hundred pounds of explosives.
The claim by Putin came ahead of an emergency meeting Friday at the U.N. Security Council in New York on the attacks on the Nord Stream 1 and 2 pipelines, and as Norwegian researchers published a map projecting that a huge plume of methane from the damaged pipelines will travel over large swaths of the Nordic region.
Speaking Friday in Moscow at a ceremony to annex four regions of Ukraine into Russia, Putin claimed that "Anglo-Saxons" in the West have turned from imposing sanctions on Russia to "terror attacks," sabotaging the Nord Stream 1 and 2 pipelines in what he described as an attempt to "destroy the European energy infrastructure."
He added that "those who profit from it have done it," without naming a specific country.
The Biden administration dismissed Putin's claims as outlandish.
"We're not going to let Russia's disinformation distract us or the world from its transparently fraudulent attempt to annex sovereign Ukrainian territory," White House National Security Council spokeswoman Adrienne Watson said Friday.
Moscow says it wants a thorough international probe to assess the damage to the pipelines, which were filled with gas but not supplying it to Europe. Putin's spokesman has said "it looks like a terror attack, probably conducted on a state level."
European nations, which have been reeling under soaring energy prices caused by Russia's invasion of Ukraine, have noted that it is Russia, not Europe, that benefits from chaos in the energy markets and spiking prices for energy.
The U.S. has long opposed to the two pipelines and had repeatedly urged Germany to halt them, saying they increased Europe's energy dependence on Russia and decreased its security. Since the war in Ukraine began in February, Russia has cut back supplies of natural gas sent to Europe to heat homes, generate electricity and run factories. European leaders have accused Putin of using "energy blackmail" to divide them in their strong support for Ukraine.
Russia stopped gas flows through the 760-mile long Nord Stream 1 earlier this month, blaming technical problems, while the parallel Nord Stream 2 pipeline had never opened.
Denmark and Sweden, meanwhile, said Friday that the explosions that rocked the Baltic Sea ahead of the huge methane leaks from the pipelines "probably corresponded to an explosive load of several hundred kilos (pounds)."
The leaks occurred in international waters and "have caused plumes of gas rising to the surface," the two Scandinavian countries wrote in a letter to the United Nations.
NATO has warned it would retaliate for any attacks on the critical infrastructure of its 30 member countries and joined other Western officials in citing sabotage as the likely cause of damage. Denmark is a NATO member, and Sweden is in the process of joining the military alliance. Both say the pipelines were deliberately attacked.
At the U.N., Russia is a permanent member of the Security Council while neither Sweden or Denmark will be represented at the meeting Friday as they are not members.
The Integrated Carbon Observation System, a European research alliance, said "an enormous amount of methane gas has been released into the atmosphere" from the damaged pipelines, about the amount offor a city the size of Paris or a country like Denmark.
"We assume the wind on the leak area blew the methane emissions north to the Finnish archipelago, then (the emissions) bend toward Sweden and Norway," said Stephen Platt, a professor with the Norwegian Institute for Air Research, part of the group.
The data was gathered from ground-based observations in Sweden, Norway, and Finland. Experts say these methane levels aren't dangerous to public health but are a potent source of global warming.
The suspected sabotage has produced two methane leaks off Sweden, including a large one above Nord Stream 1 and a smaller one above Nord Stream 2, and two leaks off Denmark.
The Nord Stream 2 leak "has diminished, but is still ongoing," the Swedish coast guard said, increasing its warnings for ships to stay 7 nautical miles (13 kilometers, 8 miles) from the blast areas.
Nordic seismologists recorded explosions preceding the leaks. A first explosion was recorded early Monday southeast of the Danish island of Bornholm. A second, stronger blast northeast of the island hit that night and was equivalent to a magnitude-2.3 earthquake.
Denmark and Sweden also said they were worried about the blasts' "possible impact on the maritime life in the Baltic Sea."
Danish Prime Minister Mette Frederiksen said she would travel to London to discuss the gas leaks with British Prime Minister Liz Truss. She then will travel to Brussels to raise the issue with NATO Secretary General Jens Stoltenberg and European Council President Charles Michel.
The attacks on the pipelines have prompted energy companies and European governments to beef up security around energy infrastructure.
The fear of further damage to Europe's energy infrastructure has added pressure on natural gas prices, which are already high and have caused widespread economic pain across the continent.
Authorities in Norway, a major oil and gas producer, have reported at least six drone sightings near offshore installations in the North Sea, prompting the Petroleum Safety Authority Norway — the country's oil safety regulator — to "urge increased vigilance by all operators and vessel owners." Still, Norwegian Prime Minister Jonas Gahr Støre said there was no concrete threat against Norwegian oil and gas offshore installations.
Danish newspaper Ekstra Bladet said a drone was spotted Wednesday near a Danish offshore oil and gas installation in the North Sea.
Sweden has also stepped up security around its three nuclear power plants.
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