Argentine President Cristina Fernandez said Monday during a nationally broadcast address that she is refusing to comply with a U.S. judge's order to pay $1.5 billion to plaintiffs of a decade-long court case.

The judge ordered Argentina to pay $907 million by June 30 or it would not be allowed to use the U.S. financial system to pay equal amounts to other Argentine bondholders. The U.S. Supreme Court refused to hear Argentina's final appeal, Fox News reported.

Fernandez said she is willing to negotiate with the winners of the case but added that her country could not pay that amount in cash in two weeks.

"What I cannot do as president is submit the country to such extortion," she said.

If Fernandez does not meet the payment date, the country could default on a considerable amount of its performing debts that are held by bondholders. The holders previously agreed to provide debt relief that allowed Argentina to rebound from its 2001 economic crisis, according to Fox.

Fernandez said that experts are figuring out ways to avoid the country from going into default while still being able to pay the bondholders. In her address, she also called NML Capital Ltd. and other investors that the court has ordered the government to pay "vulture funds."

"It's our obligation to take responsibility for paying our creditors but not to become the victims of extortion by speculators," she said.

Fernandez called on her country's citizens to "remain tranquil" after the Supreme Court loss and added, "It was known that this would happen." She noted that the government has a good history of negotiating debt accords.

However, her tough stance has been met with instance from some of her country's analysts, economists and opposing politicians to comply with the court order who fear that her decision will take its toll on the nation's economy, Fox reported.

The Supreme Court justices also approved a motion in a 7-1 vote that would allow bondholders to force the county into revealing where it owns property around the world, making it easier to collect Argentina's other debts that haven't been paid back.