Russian President Vladimir Putin said on Saturday that an African initiative could be a basis for peace in Ukraine but that Ukrainian attacks made it hard to realise.
He was speaking at a press conference after meeting African leaders in St Petersburg on Friday and hearing their calls for Moscow to move ahead with their plan.
"There are provisions of this peace initiative that are being implemented," he said. "But there are things that are difficult or impossible to implement."
Reuters reported in June that African mediation in the conflict could begin with confidence-building measures followed by a cessation of hostilities agreement accompanied by negotiations between Russia and the West.
Putin said that one of the points in the initiative was a ceasefire. "But the Ukrainian army is on the offensive, they are attacking, they are implementing a large-scale strategic offensive operation... We cannot cease fire when we are under attack."
On the question of starting peace talks, he said, "We did not reject them... In order for this process to begin, there needs to be agreement on both sides."
Ukrainian President Volodymyr Zelenskiy has rejected the idea of a ceasefire now that would leave Russia in control of nearly a fifth of his country and give its forces time to regroup after 17 grinding months of war.
US President Donald Trump is dispatching his Iran negotiating team, led by Vice President JD Vance, to Pakistan for talks, the White House told reporters on Wednesday, adding that the first round of negotiations would take place on Saturday.
Israel carried out its heaviest strikes on Lebanon since the conflict with Hezbollah broke out last month, even as the group paused attacks on northern Israel and Israeli troops in Lebanon under a two-week US-Iran ceasefire.
The United States will work closely with Iran and the two countries are discussing tariff and sanctions relief, US President Donald Trump said on Wednesday, following the announcement of a two-week ceasefire.
The United States and Iran agreed to a two-week ceasefire brokered by Pakistan, suspending a six-week-old war that has killed thousands, spread across the Middle East and caused unprecedented disruption to the world's energy supplies.
Israel's military has issued repeated urgent warnings to residents of the city of Tyre on Wednesday to evacuate their homes immediately and move north of the Zahrani River, saying it will strike the area.
The UAE says it is closely monitoring the announcement of a two-week ceasefire, and is seeking further details to ensure Iran fully commits to an immediate halt in hostilities and the unconditional reopening of the Strait of Hormuz.
His Highness Sheikh Abdullah bin Zayed Al Nahyan, UAE Deputy Prime Minister and Minister of Foreign Affairs, has discussed the latest regional developments with counterparts from Saudi Arabia, Jordan and Bolivia.
The UAE air defences have successfully intercepted 17 ballistic missiles and 35 drones launched from Iran on Wednesday, the Ministry of Defence confirmed.