每日英語跟讀 Ep.K470: What makes a nuclear weapon ‘tactical’?
From the war in Ukraine to North Korea’s recent missile testing spree, tactical nuclear weapons are being debated and developed in a way not seen since the Cold War.
There is no universal definition of such weapons, and analysts note that the use of any type of nuclear device would break the “nuclear taboo” in place since the United States dropped atomic bombs on Japan in 1945, the only time they have been deployed in war.
Here are the characteristics of tactical nuclear weapons and why they have drawn so much attention.
從烏克蘭戰爭到北韓最近狂熱試射飛彈，「戰術核子武器」（戰術核武）正以冷戰以來前所未有的方式進行辯論和發展。 此類武器並無一放諸四海皆準的定義，分析人士指出，使用任何類型的核裝置都將打破自一九四五年美國向日本投下原子彈以來的「核禁忌」，這是核武唯一一次用在戰爭中。
以下是戰術核武的特點，及其為何如此受關注。
WHAT IS A TACTICAL NUCLEAR WEAPON?
Tactical nuclear weapons are often characterized by their size, their range, or their use for limited military targets.
什麼是「戰術核子武器」？
戰術核武之特點，通常依其大小、射程，或用於較小的軍事標的來界定。
They are often referred to as “non-strategic weapons,” in contrast with strategic weapons, which the US military defines as designed to target “the enemy’s warmaking capacity and will to make war,” including manufacturing, infrastructure, transportation and communication systems, and other targets.
「戰術核子武器」通常被稱為「非戰略武器」，不同於「戰略武器」。美國軍方將「戰略武器」定義為針對「敵人的戰爭能力與發動戰爭的意願」，包括製造、基礎設施、運輸與通訊系統，以及其他攻擊目標。
Tactical weapons, by contrast, are designed to accomplish more limited and immediate military goals that win a battle.
The term is often used to describe weapons with a lower “yield,” or the amount of power released during an explosion.
相較之下，戰術武器目的在攻擊範圍更小、更直接的軍事目標，而贏得一場戰鬥。
「戰術武器」這術語通常是描述「威力」較小，或者說爆炸時釋放之能量較低的武器。
They are typically many times larger than conventional bombs, cause radioactive fallout and other deadly effects beyond the explosion itself, and there is no agreed upon size that defines tactical weapons.
戰術武器通常比一般的炸彈大很多倍，會導致放射性落下灰和除了爆炸本身以外的致命影響；對於戰術武器的尺寸，則並無一致的定義。
Tactical weapons are often mounted on as missiles, air-dropped bombs, or even artillery shells that have a relatively short range, far less than the huge intercontinental ballistic missiles (ICBMs) designed to travel thousands of kilometers and strike targets across oceans.
However, many of these delivery systems can also deliver strategic nuclear weapons
戰術武器通常以導彈、空投炸彈甚至砲彈的形式發動，其射程相對較短，遠不及射程數千公里，旨在跨越海洋打擊目標的大型洲際彈道飛彈（ICBM）。 然而，許多這種運載系統也可以運載戰略核武。
WILL THEY BE USED?
President Vladimir Putin, who rules the world’s biggest nuclear power, has repeatedly cautioned the West that any attack on Russia could provoke a nuclear response.
這些武器會被使用嗎？
統治世界最大核武大國的俄國總統弗拉迪米爾‧普亭一再警告西方，對俄國的任何攻擊都可能引發俄國以核武反擊。
US President Joe Biden said on Wednesday last week he doubted that Putin would use a nuclear weapon, and analysts have said tactical weapons could have limited military use in the vast and dispersed battlefields in Ukraine.
美國總統喬‧拜登上週三表示，他懷疑普亭會使用核武，分析人士表示，在烏克蘭這幅員廣闊而分散的戰場，戰術武器之軍事用途可能有限。
Earlier Biden noted that the use of even small nuclear weapons could spiral out of control.
“I don’t think there’s any such thing as the ability to easily (use) a tactical nuclear weapon and not end up with Armageddon,” he said last week.
拜登稍早曾指出，即便是使用小型核武，也可能會失控。
「我不認為有可以輕易（使用）戰術核武，而不會導致世界末日這種事」，他上週表示。
North Korea’s pursuit of the weapons, meanwhile, could represent a dangerous change in the way North Korea deploys and plans to use nuclear weapons, analysts say.
分析人士說，與此同時，北韓對核武的追求可能意味北韓部署和計劃使用核武的方式發生了危險的變化。
It has also prompted renewed debate in South Korea over redeploying American tactical nuclear weapons, which were withdrawn from the peninsula in the 1990s, or pursuing its own nuclear program.
這也在南韓引發辯論，重新討論部署在一九九○年代撤出朝鮮半島的美國戰術核武，或是追求自己的核武計畫。
North Korea says its nuclear weapons are for self-defence.
北韓稱，其核子武器是為了自衛。