Arezou Rezvani

If there were ever a person stuck in a place he never wanted to be, it's Ukrainian President Volodymyr Zelenskiy.

Zelenskiy had been in his post for only two months when he had that infamous July 25 phone call with President Trump — during which Trump asked the Ukrainian president to help investigate former Vice President Joe Biden. For Zelenskiy, the call made what was already a delicate diplomatic situation even more complicated.

At a cancer treatment center in Iran's capital of Tehran, a doctor's fight to treat her cancer patients has become harder. As U.S. sanctions sink in, the flow of medicine and medical supplies in Iran appears to have slowed — and the reasons are difficult to pin down.

Dr. Mastaneh Sanei, an oncologist at the Roshana Cancer Center, says she's treating patients without the benefits of consistently functioning equipment and a reliable supply of drugs.

With the right treatment, she says, "you may not cure these patients, but they have the chance to prolong survival."

Principal Mary Ann Hale dreads weekends.

By the time Fridays roll around, 74-year-old Hale, a principal at West Elementary School in McArthur, Ohio, is overcome with worry, wondering whether her students will survive the couple of days away from school.

Too many children in this part of Ohio's Appalachian country live in unstable homes with a parent facing addiction. For years, the community has struggled with opioids. Ohio had the second-highest number of drug overdose deaths per capita in 2016, according to the Centers for Disease Control and Prevention.

When North Korea released three U.S. prisoners last Wednesday amid increased engagement with Washington, the families of U.S. citizens detained in Iran couldn't help but wonder about prospects for their own loved ones. Just a day earlier, the U.S. withdrew from the Iran nuclear deal and reimposed economic sanctions on Iran. For the detainees' relatives, it has been a painful and uncertain time.

Ohio has almost always voted for winning presidential candidates. The state has backed the winner in 28 of the last 30 presidential elections.

This year, the race is tight here, with some polls showing Democratic nominee Hillary Clinton modestly ahead and others putting Republican nominee Donald Trump in a slight lead.