Japan hosts G7 leaders in Hiroshima to highlight risks of nuclear weapons, with modest hopes

Japan’s Prime Minister Fumio Kishida. AP File

This week, Japan is hosting the G7 leaders in Hiroshima in an effort to highlight the risks of nuclear weapons and advance the cause of disarmament.

However, with China expanding its arsenal and North Korea and Russia making nuclear threats, there may not be much desire for aggressive action to achieve Prime Minister Fumio Kishida’s stated objective of a “world free of nuclear weapons.”

Following are some queries and responses regarding nuclear weapons and Japan’s objectives:

Which G7 states are nuclear-armed?

Three G7 members — the United States, Britain and France — have nuclear arsenals, with Washington holding an estimated 5,244 warheads, according to the Federation of American Scientists (FAS).

The figure, which includes stockpiled, reserve and retired warheads, dwarves the inventories of France and Britain, estimated by FAS at 290 and 225 respectively.

Several G7 members, however, either host US nuclear weapons or are covered by the US “nuclear umbrella” — an expectation that Washington would deploy the weapons in their defence if necessary — including Japan.

What treaties cover nuclear weapons?

Perhaps the most famous treaty covering nuclear weapons remains the Nuclear Non-Proliferation Treaty (NPT), which opened for signature in 1968.

A total of 191 states, including China, Russia, France, Britain and the United States are parties.

The core of the treaty is a pledge by nations not to acquire nuclear weapons if they do not have them, and for nuclear-armed countries to share peaceful technology while aiming to dismantle their arsenals.

However, in July 2017, the Treaty on the Prohibition of Nuclear Weapons (TPNW) was adopted by over 100 UN states.

Campaigners view the more recent pact as filling the NPT’s “gaps” by demanding the elimination of nuclear weapons.

No nuclear power has signed it and it is actively opposed by some.

France and the United States last year called it “at odds with the existing non-proliferation and disarmament architecture.”

Japan is not party to the TPNW.

What about other nuclear powers?

There are nine nuclear-armed states in the world: the United States, Britain, France, Russia, China, India, Pakistan, North Korea and Israel, which does not officially acknowledge its arsenal.

FAS estimates most nuclear-armed states are working to increase their arsenal, with only Washington decreasing its stockpile, and those of France and Israel seen as stable.

The spectre of nuclear weapons use has reemerged in recent months, with fresh missile tests by Pyongyang and thinly veiled threats from Moscow about using the arms if it is attacked.

Russian President Vladimir Putin has pledged to deploy the weapons in neighbour and ally Belarus, and suspended participation in a treaty under which Moscow and Washington agreed to limit stockpiles.

China is also in the midst of the largest-ever expansion of its nuclear arsenal and could go from the estimated 400 warheads it now holds to 1,500 by 2035, according to the Pentagon.

What does Japan want?

Prime Minister Fumio Kishida has said he chose Hiroshima for the G7 summit to help bring home the devastation that nuclear weapons cause.

He hopes to take leaders to the city’s Peace Park and museum, according to Japanese officials, where they will confront evidence of the horrifying aftermath of the nuclear bomb.

Kishida hopes for endorsement of his “Hiroshima Action Plan”, unveiled last year.

It urges a continued pledge never to use nuclear weapons, transparency on stockpiles, further arsenal reductions, a commitment to non-proliferation and an understanding of the “realities of nuclear weapons use.”

Expectations for concrete disarmament progress are low, however, with G7 foreign ministers explicitly noting last month the “current harsh security environment” in their language on nuclear weapons.

“Instead of another empty statement, the current nuclear risk level demands real action,” the International Campaign Against Nuclear Weapons said in a statement last month.

It wants a “concrete, credible plan” for talks by all nuclear-armed states on eliminating nuclear weapons.

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