Sure. First, there's no question that Soleimani was the director of all of Iran's external military operations. That was his job. But, just so there's no equivocating, here's the text of a message Soleimani sent directly to General Petraeus a few years back.
Qasem Soleimani Quote
Dear General Petraeus, you should know that I, Qassem Suleimani, control the policy for Iran with respect to Iraq, Lebanon, Gaza and Afghanistan. And indeed, the ambassador in Baghdad is a Quds Force member. The individual who's going to replace him is a Quds Force member.
In a text message conveyed by Iraqi President Jalal Talabani to CIA director David Petraeus
No one who is informed can seriously argue his role in Iranian military actions in the Middle East. When protests in Syria began against Assad, it was Soleimani who went there and took charge of the operations against them, setting the stage for a half million deaths and a flood of refugees. Before that, he was the one who lead the crackdown against protesters in Iran in 2009, when his forces beat, tortured, and killed Iranians in the streets. He was back at it again just last year, killing thousands and disappearing thousands more, including children, as civilians in Iran and Syria protested against the Iranian regime. There is no doubt in the mind of anyone who follows events in the Middle East what Soleimani's job was, and the evidence of the death caused under his command is clear.
When protesters in Iraq and Iran call him out by name, do you think they're misinformed? When his job position was literally director of unconventional warfare and military intelligence operations for Iran, who do you think was directing the slaughter Iranian forces and Iran-backed militias performed in Iraq and Syria? Who do you think gave the orders, if not the man they took their orders from? The division Soleimani was commander of, Quds Force, supported and directed operations by Hezbollah, Hamas and Palestinian Islamic Jihad in the Gaza Strip and the West Bank, Yemeni Houthis, and Shia militias in Iraq, Syria, and Afghanistan. Not to mention, and this won't make a difference to you, but Soleimani directed attacks against Americans and their allies in the Middle East, and was surely planning more. Massive death followed Soleimani wherever he went.
If all that death and misery caused by one man is cool with you, then go ahead and mourn him. I'm glad he's gone, though, and so are millions of Iraqi, Syrian and Iranian people who want less death around them.