New Delhi, April 9 -- The ceasefire reached Wednesday has raised hopes of halting hostilities between Iran, Israel and the United States, but many issues remain unresolved.

Reaching a permanent deal will be key to ending a war that's shaken the Middle East and global energy markets. But there are vast differences between U.S. President Donald Trump and Iran's surviving leaders, and America's ally Israel has its own interests.

Here's where things stand.

Iran's government

Trump has suggested there has been "regime change" in Iran after U.S. and Israeli strikes killed the 86-year-old Supreme Leader Ayatollah Ali Khamenei on the first day of the war and a slew of other top officials and military leaders thereafter.

But Khamenei was succe...