What is actually Palestinian Islamic Jihad?

.ON THE EVENING of October 17th a burst struck al-Ahli medical facility in Gaza City. Lots of private citizens had been sheltering certainly there, together with the ill. Palestinian representatives claim that hundreds died.

Hamas, the militant team that works Gaza, as well as several Arab nations pointed the finger at Israel. Israel’s legion, presenting drone video as evidence, mentioned that the surge was caused by a malfunctioning spacecraft discharged through Palestinian Islamic Jihad (PIJ), one more militant group. PIJ, which runs in the West Banking Company as well as Gaza, rejected the claims.

On Oct 18th, on a visit to Israel, Head of state Joe Biden additionally condemned “the other team”, backing up Israel’s account. What is PIJ and also what danger does it pose in this disagreement?