When Naama Issachar was caught with 9.5 grams of marijuana at a Moscow airport in April, the 26-year-old’s expectation of a wrist slap turned into a nightmare.

Earlier this month, she was sentenced to seven and a half years for drug smuggling after the charges were upgraded from possession. Now her sister, Liad Goldberg of Williamsburg, is claiming that Issachar is a victim of government maneuvering.

“My sister is being used as a political pawn,” said Goldberg, 32.

It’s been reported that Russia is angling for a swap between Issachar and the Russian hacker Alexei Burkov, who was arrested and jailed in Israel in 2015, and who is awaiting extradition to the US.

Issachar, a Fair Lawn, New Jersey, native was returning to Israel — where she moved at age 16 — from a yoga sabbatical in India when customs agents at the Sheremetyevo Airport discovered the marijuana in her checked luggage during a layover.

According to Russian law, possession of more than six grams is a criminal offense.

Goldberg is outraged that Issachar is in prison while a Staten Island woman was recently released after a similar situation.

Over the summer, Staten Islander Audrey Eliza Lorber, 19, was caught with marijuana at Pulkovo Airport in St. Petersburg and freed after seven weeks of detainment.

“Lorber had 19 grams of pot and then they let her go [with] a $235 fine, so why should my sister, who had nine grams, who’s been imprisoned for 200 days, get a seven-and-a-half year sentence?” said Goldberg.

“There’s nothing about my sister’s case that’s normal or just,” she added. “This is such a shady situation.”

Alexander Tayts, Issachar’s lawyer, told Ynet News the sentence is “excessively severe.”

Goldberg is trying to reach Donald Trump to present her plea: “Help us negotiate with Russia to release my sister. Her sentencing was unjust and wildly disproportionate.”

She said that Issachar took responsibility for the contraband, but that it was there without her knowledge. “She wasn’t aware the pot was in her bag,” Goldberg told The Post, adding that Issachar traveled with various people during her three-month trip throughout India.

“People say, ‘Don’t do the crime if you can’t do the time,’ ” Goldberg said. “[But] she doesn’t deserve to serve eight years in a Russian prison for having nine grams of pot.”