Khalil Shikaki, a leading Palestinian political analyst, said the declaration would mean “absolutely nothing” on the ground “until he starts taking the steps he mentioned” to curtail security, economic, and civil coordination between Israel and the Palestinian Authority. He said Mr. Abbas would be under tremendous pressure from Palestinians to cut these ties but would probably take weeks or months to follow through, if at all.

Others expressed skepticism that Mr. Abbas’s announcement would change anything.

Nathan Thrall, a Jerusalem-based analyst for the International Crisis Group, said that what sounded like a bold declaration was “a years-old talking point.”

Aaron David Miller, a Middle East expert and scholar at the Woodrow Wilson Institute in Washington, said that as long as Mr. Abbas stopped short of dismantling the Palestinian Authority and ending security coordination with Israel, “this is an expression of frustration and an effort to create a new point of political departure for his international drive for recognition.”

Mr. Abbas, 80, who is in the 11th year of a four-year term, because Palestinian disunity has prevented elections, has seen his popularity plummet over the past year. A recent poll showed two-thirds of Palestinians wanted him to resign.

For years, he has been threatening to resign, dissolve the Palestinian Authority or end security coordination with Israel, any of which might have constituted the “bombshell” he had promised. Instead, his declaration fell short of the concrete action called for by many of his colleagues. While he seems genuinely frustrated by the stalemate with Israel, Mr. Abbas has been unwilling to cede power or change tactics. One way he has demonstrated his frustration is by moving to seek international recognition of Palestinian statehood to pressure Israel. At the United Nations, he won upgraded status to a nonmember observer state in 2012.