Israel and Iran
The 12-day conflict began when Israel hit targets in Iran on 13 June.
On 23 June, Trump posted: "Officially, Iran will start the CEASEFIRE and, upon the 12th Hour, Israel will start the CEASEFIRE and, upon the 24th Hour, an Official END to THE 12 DAY WAR will be saluted by the World."
Pakistan and India
Tensions between these two nuclear-armed countries have existed for years, but in May hostilities broke out following an attack in Indian-administered Kashmir.
After four days of strikes, Trump posted that India and Pakistan had agreed to a "FULL AND IMMEDIATE CEASEFIRE".
Rwanda and the Democratic Republic of Congo
In June, the two countries signed a peace agreement in Washington aimed at ending decades of conflict. Trump said it would help increase trade between them and the US.
Since the latest deal, both sides have accused each other of violating the ceasefire and the M23 rebels - which the UK and US have linked to Rwanda - have threatened to walk away from peace talks.
Thailand and Cambodia
On 26 July, Trump posted on Truth Social saying: "I am calling the Acting Prime Minister of Thailand, right now, to likewise request a Ceasefire, and END to the War, which is currently raging."
A couple of days later, the two countries agreed to an "immediate and unconditional ceasefire" after less than a week of fighting at the border
Armenia and Azerbaijan
In March, the two governments had said they were ready to end their nearly 40-year conflict centred on the status of Nagorno-Karabakh.
Egypt and Ethiopia
There was no "war" here for the president to end, but there have long been tensions over a dam on the River Nile.
Serbia and Kosovo
On 27 June, Trump claimed to have prevented an outbreak of hostilities between them, saying: "Serbia, Kosovo was going to go at it, going to be a big war. I said you go at it, there's no trade with the United States. They said, well, maybe we won't go at it."
