The interview came after US President Barack Obama admitted that failing to plan the aftermath of the NATO-led intervention in the crisis-torn Libya was the biggest misstep of his presidency.
"It is just the beginning. We are only beginning to witness the catastrophic consequences [of Obama's policy]," she said.
Geller also harshly criticized the US leader for his stubborn unwillingness to act in line with real state of affairs.
"So many Islamic State [group] victories were won with American weaponry. This is reality. And Obama's entire presidency has been shaped by his refusal to accept reality," she said.
She warned that even though Obama acknowledged his Libya-related misstep, which she called an attempt to "save face," the US President will go ahead with his "dangerous" policy.
"He does not stop and he learns nothing. He continues waging this incoherent, incomprehensible and very dangerous policy not just abroad but here in America," she said.
Libya has been in a state of turmoil since the 2011 Arab Spring movement, which later led to a civil war and the overthrow of Gaddafi by Western-supported Islamic extremists.
The Obama administration backed the use of NATO air power in Libya to ensure that rebels topple the then leader after a 2011 revolt. Since Gaddafi's death the influence of extremist Islamist groups in the country has steadily grown.
