From London to Washington, and as far as Tehran, the question is being asked: Will Egypt of 2011 become the Iran of 1979? Some leading figures in Tehran, as well as Iranian state-run media, are trying to cast Egypt as another country caught up, as is Lebanon, in the region's tilt  toward the Islamist orbit. "I herewith proclaim to those (Western leaders) who still do not want to see the realities that the political axis of the new Middle East will soon be Islamic," Ayatollah Ahmad Khatami, a hard-line cleric, said last week at Friday prayers. He also applauded what he called an end to "Western-backed dictators in the Arab world." Meanwhile, a few European leaders are already sounding the alarm that Egypt's venerable Muslim Brotherhood, which dates back to the 1920s, could fill the vacuum left by the collapse of the Mubarak regime. British Foreign Secretary William Hague told reporters it was not up to foreigners to run Egypt, but "certainly we would not want to see a government based on the Muslim Brotherhood."

And in Washington, some neoconservatives -- the very same circle that not long ago was calling for regime change in Iran based on their reading of the will of the people -- are now backpedaling and advising President Obama to tread lightly, so as not to create an opening in Egypt for an Islamist state to emerge from more than a week of mass popular protest. Some Israelis are also making the same recommendation out of fear that Egypt will go the way of Iran. "...Israelis, have been overtaken by fear: The fear of democracy. Not here, in neighboring countries," Sever Plocker, an Israeli commentator, wrote in the daily Yediot Ahronot. "It is as though we never prayed for our Arab neighbors to become liberal democracies."

The voices making comparisons with 1979 have failed to understand the seeds of the Islamic revolution, nor do they seem to recognize that today's Egyptian uprising is a non-ideological movement. As someone who conducted research on the Brotherhood in Egypt for many years, I predicted 10 years ago that the only alternative to Mubarak would be a more democratic state run by the Brotherhood; I have been surprised at just how minimal a role the Brotherhood has played so far -- not only in the street movement, but in the consciousness of the young people in Tahrir Square.

Their grievances are aimed squarely at the repression, cronyism, and stagnation that have smothered the Egyptian people for decades under Mubarak and his regime. Both the weakness and strength of their protest movement lies in the fact that they have no prescribed path forward. Of all the slogans chanted in the streets of Egypt over the last week, the Brotherhood's decades-old cry -- "Islam is the solution" -- has been noticeable mostly for its absence. There are several reasons the Brotherhood has found itself in the background, even though it has stated that the movement supports Mohamed ElBaradei as a symbolic leader of the opposition, and it is steadily becoming more visible in the protests.

The organization put forth no leader of its own, either to negotiate with Mubarak's regime or to guide the street protests, because it fears that today's Egyptian youth -- who has succeeded in a short time where the Brotherhood has failed for nearly 90 years -- might shun the Brotherhood altogether if it were to become a political liability. The Brotherhood also wants to deprive Western leaders, such as British Secretary Hague, of any ammunition to support warnings that this is another Islamic revolution.

And third, the opposition -- which is comprised of middle class, non-ideological youth, workers and the Brotherhood -- wants to avoid at all cost giving the military a reason for a violent crackdown against the protestors. To date, the military seems to be preserving the regime while also respecting the rights of the people, who have great respect for the army as an institution. But all parties know the military's attitude might change drastically if it felt the influence of the outlawed, but semi-tolerated Muslim Brotherhood was becoming too prominent in the uprising.

Some skeptics make the point that the Iranian revolution succeeded because of its diversity of secularists and nationalists, not just the clerical establishment. True enough, but the driving forces of the revolution were Ayatollah Ruhollah Khomeini, who was clearly the charismatic figure leading the way, and his cadre of clerics, some of whom are still the pillars of the regime today in Iran. There are no clerics or even leaders within the Brotherhood positioning themselves as stand-ins for Mubarak.

If anything, this is a bittersweet moment for the Brotherhood. Although Mubarak appears on his way out, the movement seems to have missed the historical moment when it could have captured a powerful place in the corridors of power. That window began closing in 2005, after the Brotherhood captured 88 seats in the Egyptian parliament only to be targeted aggressively and largely suppressed by Mubarak's security services ever since. During these intervening years, a new Egyptian generation has arisen that is more secular, more worldly, and not loyal to any particular organization or movement. Though the Brotherhood, in the long term, may still prove to have a profound role in a new Egypt; after all, the skills and tools it takes to start a revolution are rarely those needed to finish it. Ask the Mensheviks and Lenin.

Rather than reaching for false analogies between Iran of 1979 and Egypt today, Western leaders should accept the fact that any new Egyptian government is unlikely to support policies the United States has promoted for 30 years, regardless of whether the Muslim Brotherhood has a small or large share in a new government. The time has come for the West to acknowledge that Egyptian society opposes the country's 1979 peace agreement with Israel, resents the United States' close relationship with the Jewish state (a country most Egyptians loathe), and has been historically prepared to end the country's reliance on U.S. aid. In fact, Mubarak's image as a puppet of the United States has for years been a political liability.

It is clear the new Egypt in the post-Mubarak era will be self-determined, more anti-American and closer to its Arab and Muslim neighbors. And this will happen whether or not the Muslim Brotherhood takes the driver's seat in a new government.

Geneive Abdo, director of the Iran program at the National Security Network and The Century Foundation, is the author of No God But God: Egypt and the Triumph of Islam.