Iran has issued a fresh warning to Donald Trump, laying down a key demand for ongoing ceasefire talks, as oil prices send global markets into chaos. 

Iran's top diplomat Abbas Araghchi said the current ceasefire between Iran and the US covers all fronts, including Lebanon, where Israeli forces continue to strike the Tehran-backed militant group Hezbollah.

The regime warned that any violation there would be treated as a violation of the entire ceasefire, and that the US and Israel would face the 'consequences' of their actions.

'The ceasefire between Iran and the US is unequivocally a ceasefire on all fronts, including in Lebanon,' Araghchi wrote. 'Its violation on one front is a violation of the ceasefire on all fronts.'

'The US and Israel are responsible for the consequences of any violation.'

The warning pushed oil prices higher with Brent crude notching a 2 percent gain to $93 per barrel, as US gas prices are holding at a high of $4.32 a gallon on average.

Iran's warning comes after it fired missiles and drones at a US airbase in Kuwait, in retaliation for American airstrikes that Washington described as 'self-defense strikes' against the regime's radar and drone command facilities.

Trump, meanwhile, continues to insist that Iran 'really wants to make a deal' and that a comprehensive peace agreement with the regime remains within reach.

'Iran really wants to make a deal, and it will be a good one for the USA and those that are with us,' Trump wrote on X in the middle of the night.

The President also took aim at Democrats, claiming they were making it difficult for him to negotiate an end to the current war. 

'Don't the Dumocrats, and various seemingly unpatriotic Republicans, understand that it is MUCH tougher for me to properly do my job and negotiate, when political hacks keep negatively 'chirping,' at levels never seen before, over and over again, that I should move faster, or move slower, or go to war, or not go to war, or whatever,' Trump wrote.

'Just sit back and relax, it will all work out well in the end - It always does!'

Trump's post comes and amid growing fears that the fragile ceasefire between Washington and Tehran could be unraveling after the latest round of strikes.

Lebanon remains central to the ongoing ceasefire because it is home to Iran's largest proxy militia, Hezbollah, which continues to launch rocket strikes at Israel and coordinate with Hamas in Gaza.

Israel remains hesitant to include Lebanon in the ongoing ceasefire with Tehran, viewing that conflict as separate from the broader war. 

The US has tried to mediate between Israel and Lebanon over the past few weeks, pushing for a temporary ceasefire while Trump negotiates a long-term peace agreement with Tehran. 

However, US diplomatic efforts appear to have faltered, as the IDF continues to advance through southern Lebanon and launch aerial attacks on Hezbollah militia targets. 

The overall negotiations between the US and Iran are at a standstill, as both countries remain divided over Trump's demand that Tehran completely abandon its nuclear weapons program and surrender its stockpile of enriched uranium.

Trump is attempting to secure a memorandum of understanding (MOU) that would delay official peace negotiations by another two months but result in the immediate reopening of the Strait of Hormuz. 

The strait, a waterway in the Persian Gulf, carries roughly one-fifth of the world's oil traffic. It has been closed since the US and Israel launched the war at the end of February, causing fuel prices to surge and forcing major countries to ration their oil reserves.