There are "no preparations" for US President Donald Trump to confer with Russia's Vladimir Putin "in the immediate future", a White House official has announced.
Recently Trump said he and the Kremlin leader would hold talks in Hungary's capital within two weeks to address the war in Ukraine.
A preparatory meeting between US Secretary of State Secretary Rubio and his Russian counterpart Foreign Minister Lavrov was planned for this week - but the White House said the two had had a "constructive" discussion and that a meeting was no longer "necessary".
The administration withheld additional specifics on the reason the negotiations had been put on hold.
Trump had discussed a Budapest summit during a call with Putin, a just prior to hosting Ukraine's President Zelensky in the Oval Office.
Some reports indicated his meeting with the Ukrainian leader had been a "shouting match", with those familiar indicating Trump had pushed him to cede extensive regions of eastern Ukraine as part of a deal with Moscow.
However, on this week Trump endorsed a truce plan endorsed by Ukraine and European leaders to halt the hostilities on the current front line.
"Leave it as is the way it is," he remarked.
Moscow has consistently objected against halting the current line of contact.
Moscow was exclusively seeking "permanent resolution", Lavrov stated on Tuesday, suggesting that freezing the front line would only amount to a temporary ceasefire.
The "root causes" of the hostilities needed to be addressed, the Russian diplomat said, using Moscow's terminology for a series of comprehensive conditions that involve the recognition of complete Moscow control over the eastern region as well as the demilitarisation of Ukraine – a unacceptable proposition for Ukraine and its European partners.
The Ukrainian president said discussions about the current lines were the "beginning of diplomacy" but that Moscow was "employing all tactics" to evade negotiations.
He additionally stated the sole subject that could cause Russia to "take notice" was that of the delivery of long-range weapons to Ukraine.
The Russian president's unscheduled call with the US leader last Thursday came ahead of reports that the United States was considering delivering long-range Tomahawk missiles to Ukraine that could possibly hit inside Russia.
The Ukrainian leader asserted it was the weapons consideration that had compelled Moscow to enter into dialogue. The discussion regarding the missiles had emerged as a "strong investment" in negotiations", he added.
Lena is a tech journalist with over a decade of experience covering consumer electronics and emerging technologies.