If the United States hopes to maintain a level of influence in the world commensurate with its economic and military strength, it must modernize and dramatically improve some of its soft-power foreign policy tools. Many of those tools have proven ineffective, and fail to reflect the transformational changes in the past two decades prompted by technology, connectivity, and global markets.

The same diplomatic maneuvering is practiced in any series of international negotiations, but in this case, the fog of diplomacy was more dense than usual. One reason is that the Obama administration felt that it had to manage the public discourse about the negotiations in the United States to avoid losing control of public opinion to the pro-Israeli right in Congress.

Japan imposed new sanctions against Russia on Tuesday that were more limited than those announced last month by the United States, a move that analysts said illustrates Tokyo’s conflicting desires to show solidarity with Washington while also keeping the door open to improving ties with Moscow.

An Obama administration program secretly dispatched young Latin Americans to Cuba using the cover of health and civic programs to provoke political change, a clandestine operation that put those foreigners in danger even after a U.S. contractor was hauled away to a Cuban jail. Beginning as early as October 2009, a project overseen by the U.S. Agency for International Development sent Venezuelan, Costa Rican and Peruvian young people to Cuba in hopes of ginning up rebellion.

The blunt, unsparing language — among the toughest diplomats recall ever being aimed at Israel — lays bare a frustrating reality for the Obama administration: the government of Prime Minister Benjamin Netanyahu has largely dismissed diplomatic efforts by the United States to end the violence in Gaza, leaving American officials to seethe on the sidelines about what they regard as disrespectful treatment.