YANGON - Pope Francis met Myanmar’s powerful army chief Monday at the start of a highly sensitive trip to the majority-Buddhist country, which is under fire internationally for a brutal army crackdown that sparked an exodus of Rohingya Muslims.

The 80-year-old pope , the first to travel to Myanmar , received Senior General Min Aung Hlaing at the archbishop’s residence in Yangon, where the pontiff will stay during his visit. The UN and US accuse the army which the general controls of “ethnic cleansing” in a campaign that has driven more than 620,000 Rohingya from Myanmar’s northern Rakhine state into neighbouring Bangladesh since August.

The military crackdown on the reviled Rohingya looms large over the pope’s four-day trip. He has called the Rohingya his “brothers and sisters” in repeated entreaties to ease their plight.

During a 15-minute meeting the pontiff and the army chief spoke of the “great responsibility of the country’s authorities in this moment of transition”, the Vatican spokesman Greg Burke said.

Myanmar was ruled by a junta for five decades until a civilian government led by Aung San Suu Kyi came to power last year.

Rohingya are still fleeing into Bangladesh even after an agreement was signed with Myanmar to repatriate hundreds of thousands of the Muslim minority displaced along the border, officials said Monday.

“The number of arrivals has declined, but it has not stopped,” Bangladesh border guard commander Lieutenant Colonel S.M. Ariful Islam told AFP.

Islam said at least 400 refugees had passed by guards under his command along the border with Myanmar since the agreement was signed.

Earlier on Monday Francis was welcomed at Yangon’s airport by children from different minority groups in bright bejewelled clothes, who gave him flowers and received a papal embrace in return. Nuns in white habits were among devotees waving flags as his motorcade swept past the golden Shwedagon Pagoda.

“I saw the pope ... I was so pleased, I cried!” Christina Aye Aye Sein, 48, told AFP after the pope’s convoy received a warm but modest welcome. “His face looked very lovely and sweet... He is coming here for peace.”

Myanmar’s estimated 700,000 Catholics make up just over one percent of the country’s 51 million people.

But around 200,000 Catholics are pouring into Myanmar’s commercial capital Yangon before a huge open-air mass on Wednesday.

“People came from all corners of the country, even if we could only see him for a few seconds,” Sister Genevieve Mu, an ethnic Karen nun, told AFP.

The pope’s speeches will be scrutinised by Buddhist hardliners for any mention of the word “Rohingya”, an incendiary term in a country where the Muslim group are reviled and labelled “Bengalis” - alleged illegal immigrants from Bangladesh.

On Tuesday Francis will meet Suu Kyi, a Nobel Peace Prize winner whose lustre has faded because of her failure to speak up publicly for the Rohingya.

He will hold two masses in Yangon.

Speaking shortly before he left Rome, the pontiff said: “I ask you to be with me in prayer so that, for these peoples, my presence is a sign of affinity and hope.”

The army, which ruled the country with an iron fist for 49 years, insists its Rakhine operation was a proportionate response to Rohingya “terrorists” who raided police posts in late August, killing at least a dozen officers. But rights groups, the UN and the US have accused the military of using its operation as cover to drive out a minority it has oppressed for decades. The deluge of desperate refugees arriving in Bangladesh have carried with them accounts of murder, rape and arson at the hands of troops and Buddhist mobs.

Inside the country opinion differs sharply from the rest of the world.

“If the pope did come and weigh in heavily on this issue, it would inflame tensions and it would inflame public sentiment,” said Myanmar-based political analyst Richard Horsey.

Days before the papal visit, Myanmar and Bangladesh inked a deal vowing to begin repatriating Rohingya refugees in two months.

But details of the agreement - including the use of temporary shelters for returnees, many of whose homes have been burned to the ground - raise questions for Rohingya fearful of returning without guarantees of basic rights.

Francis will travel on to Bangladesh on Thursday, where he will meet a group of Rohingya Muslims in the capital Dhaka.

Nur Mohammad, a 45-year-old Rohingya imam at the Nayapara refugee camp in Cox’s Bazar in Bangladesh, said he hoped the pope would tell the Myanmar government to accept Rohingya, “give citizenship to them and end all discriminations against them”.