Meeting Monday with Mohamed al-Hassan, head of the UN Assistance Mission for Iraq (UNAMI), al-Sistani was quoted by the official Iraq News Agency as saying Iraq's progress depends on putting weapons in the state's hands and checking outsiders.
Iraqis must "exert their utmost efforts to overcome their failures, working diligently toward achieving a better future for their country where everyone enjoys security, stability, progress, and prosperity,” INA reported him as saying.
This will be achieved by "preventing foreign interference in all its forms, enforcing the rule of law, restricting arms to the state, and combating corruption at all levels," al-Sistani said, adding: "But it seems that the Iraqis have a long way to go until they achieve this, may God help them."
Al-Sistani is Iraq's preeminent Shia religious authority and an influential voice on public affairs. Along with populist cleric Moqtada al-Sadr, he has been a longtime skeptic of Iranian influence in the country since a US-led invasion in 2003.
However, al-Sistani's 2014 call for armed defense against the expansion of ultra-hardline Sunni Islamic State militants led to the formation of the Popular Mobilization Forces, a grouping of armed factions including some backed by Iran.
His remarks come as Iraq is caught in the middle of broader regional conflicts and hosts US troops at the same time Tehran arms and funds powerful Shia militias.