President William Ruto on Sunday engaged a United States bureaucrat on an array of matters pertinent to the two countries.
The US state secretary Anthony Blinken confirmed via Twitter that he had had a phone conversation with president.
According to Blinken, their conversation expanded from the US-Kenya shared priorities to the state of of affairs in Sudan and eastern Democratic Republic of Congo (DRC).
He said Ruto had been entrusted with playing a part in returning normalcy in the aforementioned countries.
"Spoke today with William Ruto of Kenya to advance shared priorities, including ending the conflict in Sudan and advancing East African Community-led talks on eastern DRC," said Blinken.
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Ruto has been calling for concerted effort by the East African community to end the war in Khartoum.
Paramilitary forces have been facing off with the Sudanese official army posing security threat not only to Sudan but its neighbours.
Ruto had suggested deployment of East African peacekeeping troops to contain the situation.
The official army is however not on good terms with Ruto; they claim the Kenya's president is in favour with the paramilitary foes.
Therefore , the Sudanese army generals do not want Ruto to mediate between the warring sides as an IGAD envoy.
On DRC, Ruto has been lauding the progress made so far between Kinshasa and the M23 rebels.
The conflict between the DRC troops and M23 men have seen displacement of people and sexual offence perpetrated to women and children.
The US has held that Rwanda is backing the rebels.
Kenya's retired president Uhuru Kenyatta has been at the centre of the initiative and efforts to realise ceasefire.