In 1995, in succession of Iraq-Iran war USA imposed the sanctions on Iran in terms of economic and military support. With the passage of time and change of foreign policies and govt these sanctions kept on tightening and softening , as broader result destroying the economy of Iran. that yielded the much crop towards the failure of state.
The Iranian nuclear program which was initiated by USA support in 1950s added the fuel in rivalry, when Iran was about to craft a nuclear weapon and it went to turn of so called threat to Jew’s Occupied Palestine (Israel).
Which led the tightening of sanctions on Iran .
Meanwhile in the middle-east Israel started the terrorism and illegaly started to engulf the Palestine which resulted in the form of retaliation and further set the bed of disrest in the Arab. which affected the Jordan, Lebanon and Syria directly further added the whole region indirectly.
CIA and Mossad in the line of proxy settled the base of ISIS which used the name of Islamic militancy producing the multiple results for multiple scenarios, instead of making the direct invasion they have to rely upon ISIS which took control in major areas of Iraq near the iranian border while setting the black image of Islam with further small objectives.
The approaching ISIS, Iran felt the direct threat to border and started to counter the the threat on border, in Iraq and lengthened the stick to Lebanon, Syria and yemen by the mean of weaponry , training to malatias and somehow financial means. in this all the central figure named as Qasem Soleimani Iranian major general in the Islamic Revolutionary Guard Corps (IRGC) and, from 1998 until his death, commander of its Quds Force, a division primarily responsible for extraterritorial military and clandestine operations. Qasem Soleimani was the key player to counter the threat to iran.
Qasem Soleimani having the vast experience and smart mind countered the proxy and nullified many affects of proxies while extend the support to Hezbollah, Hamas and Hothi rebellions in Yemen created the hindrance to Israel and its front and backdoor allies. Moreover in syria insurgency Iranian general Qasem Soleimani played the smart role and started to create more problems and threat to rivalries. Additionally destroyed the ISIS assets. by suffering this loss the unrest started to spread out in rivalries.
The USA and Israel started to face the difficulty and they felt the need to suppress the threat, For this mutual cause it was decided to eliminate the general who is one of the most powerful personalities in the republic. To accomplish this objective on January 03/2020 USA carried out a drone airstrike which resulted the death of Qasem Soleimani in baghdad. which resulted the outbreak of severe protests and further left the question mark on international security.