Nearly 40,000 people have fled Syria's sectarian violence for neighboring Lebanon over the past three months. With many fearful of returning anytime soon, their arrival adds a new layer to Lebanon's protracted humanitarian crisis at a moment when aid groups are badly underfunded and overstretched.

The so-called Islamic State West Africa Province (ISWAP) insurgent group has launched its most successful military campaign to date in northeast Nigeria's Lake Chad Basin region. Throughout May, ISWAP raided a series of supposedly impenetrable army bases, forcing the military's withdrawal and the displacement of civilian communities—some of whom had been recently resettled by the Borno State government following its closure of internally displaced persons camps in the state capital, Maiduguri.

A May 21 suicide attack on bus serving an army-run school in Khuzdar district of Pakistan's Balochistan province killed five people, three of them children. Islamabad, which faces accusations it was involved in last month's attack in Indian-administered Kashmir, quickly pointed the finger at neighboring India and Afghanistan. Both New Delhi and Kabul have denied the allegations. Balochistan has been the subject of a decades-long armed struggle for autonomy. Ethnic Baloch communities have accused Pakistani authorities of disenfranchisement, neglect and forced disappearances.

The International Court of Justice (ICJ) held hearings this week on Israel's ban on cooperation with UNRWA, the UN's agency for Palestine refugees. It could take some time for a (non-binding) ruling on Israel's move to cut ties with UNRWA, and it has already been two months since Israel reinstated its full siege on Gaza, blocking the entry of aid and commercial goods while bombarding the territory. In a graphic illustration of the extent of the siege, organizers of a vessel carrying aid and activists to Gaza said it was bombed by Israeli drones, leaving the ship disabled off the coast of Malta.

It was tragically appropriate that the second anniversary of Sudan's devastating civil war was marked by yet another massacre. At least 400 people were killed when the paramilitary Rapid Support Forces (RSF) overran the Zam Zam displacement camp in North Darfur on April 11. They also executed 10 staff members in the camp's last remaining clinic, including medics and ambulance drivers. Eighty percent of the camp's original 500,000 population has escaped to the nearby government-held town of el-Fasher, although the RSF is believed to be trying to stop people—especially young men—from leaving.

More than 600 asylum seekers and migrants have gone missing after being intercepted by the Tunisian Coastguard in the Mediterranean Sea. The group was picked up while trying to make it to Europe on the night of March 16, along with 18 dead bodies, and hasn't been heard from since. Monitoring groups suspect they were dumped in Tunisia's desert border regions with Libya and Algeria—a common practice. The EU has supported Tunisia in recent years to crack down on migration, even as reports of abuse have multiplied.

Libya's Tripoli-based Government of National Unity (one of two rival governments) has accused aid groups of planning to settle African migrants in the country, to "change the demographic composition of the country" and threaten "the balance of Libyan society." The government has  reportedly ordered them to stop work. There are more than 824,000 refugees and migrants in Libya, and more than 240,000 Sudanese refugees have arrived in the country since the civil war broke out in Sudan two years ago.

Some of the world's poorest countries, including nations grappling with protracted humanitarian crises, are among those most affected by US President Donald Trump's new trade tariffs regime, which has compounded pre-existing economic strains and debt woes. Asian markets will be particularly hard hit, including imports to the US from Myanmar to be charged at 45%, and Bangladesh at 37%. Big charges were also imposed on fragile economies in the Middle East and North Africa, with Syria at 41%, Libya at 31%, and Iraq at 39%. But among the worst effects will likely be felt in Africa, where Trump's decision has created an "inexplicably cruel situation," according to the Center for Global Development (CGD). "It is hard to fathom that the administration set out to destabilize poor African countries and unclear what they hope to gain," wrote CGD researchers. The tariffs have effectively tanked the African Growth & Opportunity Act (AGOA), which allowed duty-free imports to the US for 32 countries and was credited with helping economic growth. Lesotho and Madagascar could be among the Trump tariffs' biggest losers, CGD predicted. Amid existential financial worries in the international aid sector—triggered by Trump's closure of USAID—economists have also raised the possibility of a global trade war, with far-reaching ramifications for inflation and the cost of living worldwide.