One of the saddest comments I’ve ever heard was Gaza resident Ziad Ashour’s statement to the New York Times last week. Ever since the first intifada erupted in 1987, the 43-year-old butcher said, “things have steadily declined in Gaza.”

Think about that for a moment: After 25 years of fighting Israel in every possible way–“popular resistance,” suicide bombings, rockets, diplomatic warfare, boycott/divestment/sanctions efforts–all the Palestinians have to show for it is 25 years of steady decline. Indeed, the facts bear out Ashour’s assessment: Despite massive international aid, Gaza’s per capita GDP has remained virtually flat, totaling $817 in 1987 and $876 in 2010. Unemployment, which was generally under 5 percent in the 1980s, had soared to 45 percent by the end of 2010. And to add insult to injury, neither the terror nor the diplomatic warfare succeeded in preventing Israel from flourishing over those 25 years.

But the sadder part of the story is that none of this has managed to persuade the Palestinians that such tactics are self-defeating. As Steven Erlanger’s report shows, Hamas is riding high in Gaza; even a desperately poor woman who describes her life as one of “depression and deprivation” proclaims pride in Hamas’s ability to launch rockets at Israel. And Gazan political science professor Mkhaimar Abusada tells Erlanger this is a never-ending story:

He remembered a similar burst of Hamas popularity in October 2011, after the release of the Israeli soldier Gilad Shalit, whom Hamas held for five years and exchanged for more than 1,000 Palestinian prisoners. “But a month later the Palestinians woke up to the same problems: poverty, mismanagement, siege, unemployment, little freedom of movement,” Mr. Abusada said.

Yet if Palestinians are primarily to blame for their addiction to such counterproductive tactics, the international community has played a crucial role as enabler. First of all, the massive international aid–more than four times as much per capita as any other nation receives–has cushioned them from the consequences of their bad decisions. Gaza’s situation may not be rosy, but it’s better than that of many other countries: As Michael Rubin noted, Gaza outranks more than 110 countries worldwide in terms of both life expectancy and infant mortality. And as long as international aid is keeping them relatively comfortable, Palestinians feel little incentive to change their tactics.

Far worse, however, is that by offering the Palestinians almost unstinting diplomatic support while relentlessly criticizing Israel, the world feeds Palestinian fantasies that these tactics will someday succeed–that eventually, the world will force Israel to its knees. The recent farce at the UN was a classic example: 138 countries voted to recognize “Palestine” as a state in gross violation of the Palestinians’ own signed commitments, even though it meets none of the criteria for statehood. But the world then went into a frenzy of condemnation when Israel responded by advancing planning processes–not even actual construction–in an area that every peace plan ever proposed has assigned to Israel in any case. So why would Palestinians conclude that they are the ones who need to change their behavior?

A few sober-minded Palestinians do know better. “Gaining the support of the Israeli authorities in West Jerusalem for a Palestinian state is more important than the support of 138 countries that voted for Palestine at the UN,” Ibrahim Inbawi, a Fatah activist from East Jerusalem, told the Jerusalem Report last week.

Unfortunately, the world seems unwilling to tell his countrymen the same thing. For all its vaunted concern for the Palestinians, it seems the international community would rather let them suffer another 25 years of steady decline than try to wean them from their failed strategies.