BBC News with Sue Montgomery.
President Zelensky has urged NATO to show its strength and unity ahead of a summit in Lithuania next week.
The Ukrainian leader's on a whistle stop tour of NATO countries to rally support for Kiev to be invited to join the bloc.
Speaking alongside his Czech counterpart Petr Pavel in Prague, Mr. Zelensky said that his forces now had the initiative against the Russians.
We now have the initiative. The offensive is not fast. That's a fact.
But nevertheless, we are advancing, not retreating like the Russians.
And that's why I see a positive in this.
Later, Mr. Zelensky will meet the Turkish president Recep Tayyip Erdogan, who holds a veto over whether Sweden will be able to join NATO.
The Nigerian health authorities have announced an outbreak of diphtheria in the capital of Abuja after the death of a 4-year-old child.
The highly contagious infection can cause breathing difficulties and heart problems.
It can be fatal, especially in children. Chris walker reports.
The Nigeria Center for Disease Control and Prevention said there had been multiple outbreaks of diphtheria since late last year, with almost 800 confirmed cases and at least 80 deaths.
Most of these were children.
The NCDC said majority of the cases were among people who had not been vaccinated, even though diphtheria is covered by Nigeria's routine childhood immunization program.
With a poor health care system, there are fears the outbreak could spread.
The Afghan Chamber of Commerce and Industry says more than 60,000 women will lose their jobs following the Taliban's decision to shut all female beauty salons.
It said on average five women worked in the salons and parlors, and they were the only breadwinners of their families.
The industry body said Kabul alone has more than 3,000 salons.
The UN secretary general Antonio Gutierrez has appealed for more action to tackle the urgent security needs in Haiti.
Mr. Gutierrez, who visited the country last week, said he saw the dire conditions himself and called for the deployment of an international rapid action force.
The UN special representative for Haiti, Maria Isabel Salvador said violence had intensified beyond the capital.
This grave situation is compounded by the humanitarian, human rights, and social, economic crisis the country is facing.
The secretary general's solidarity and working visit to Haiti casts the limelight on the imperative of action by Haitians and the international community.
The Haitian foreign minister said the UN had a moral responsibility to prevent what he called "the shipwreck of Haiti".