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China -

Lacking a formal extradition treaty with the US, China often resists extradition requests, especially in politically sensitive cases.

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Russia -

Without an extradition treaty, Russia typically denies US extradition requests, particularly when they involve political implications.

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Iran -

Due to strained diplomatic relations and the absence of an extradition treaty, Iran consistently refuses US extradition requests.

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North Korea -

With no diplomatic relations or extradition treaty with the US, North Korea is highly unlikely to cooperate on extradition matters. 

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Vietnam -

Vietnam lacks a formal extradition treaty with the US, leading to infrequent cooperation on extradition.

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Belarus -

Belarus doesn't have an extradition treaty with the US and has a history of denying extradition requests.

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United Arab Emirates (UAE) -

While the UAE has strong diplomatic ties with the US, it doesn't have a formal extradition treaty.

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Saudi Arabia -

Without an extradition treaty, Saudi Arabia often declines US extradition requests.

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Taiwan -

Since Taiwan isn't officially recognized as a sovereign nation by the US, there's no extradition treaty.

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Qatar -

Qatar lacks a formal extradition treaty with the US and has occasionally provided refuge to individuals wanted elsewhere.

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Ukraine -

Ukraine does not have a formal extradition treaty with the US, but it has cooperated in high-profile cases.

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Maldives -

The Maldives, a popular tropical vacation destination, doesn't have an extradition treaty with the US either.

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Oman -

Oman doesn't have an extradition treaty with the US. Extradition requests are handled on a case-by-case basis, with decisions influenced by diplomatic ties.

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Eritrea -

Eritrea has no extradition treaty with the US and maintains limited diplomatic engagement.

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Indonesia -

Indonesia lacks a formal extradition treaty with the US. While cooperation has occurred in specific instances, it's not guaranteed.

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Somalia -

Somalia doesn't have an extradition treaty with the US. Ongoing internal conflicts and limited central governance further complicate any potential legal cooperation.

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Moldova -

This Eastern European country has no official extradition agreement with the US. It occasionally cooperates in criminal cases.

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Vanuatu -

Vanuatu lacks a formal extradition agreement with the US. Its remote location and relatively lax regulatory framework make it an attractive option for individuals seeking to avoid extradition.

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South Sudan -

Without an extradition treaty and facing internal instability, South Sudan is unlikely to engage in formal extradition proceedings with the US.

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Sudan - Sudan also lacks a formal extradition treaty with the US. Political dynamics and transitional governance influence its stance on extradition matters.

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Brunei -

The Southeast Asian nation lacks an extradition treaty with the US and typically handles extradition requests individually.

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Djibouti -

Djibouti does not have an extradition treaty with the US. Extradition requests are rare and would be influenced by diplomatic relations.

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Ethiopia -

Ethiopia doesn't have a formal extradition treaty with the US. Cooperation on extradition matters is rare and influenced by diplomatic ties.

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Kazakhstan -

Kazakhstan doesn't have a formal extradition treaty with the US, though it has cooperated in some cases.

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Tunisia -

Tunisia lacks an extradition treaty with the US. Extradition requests are assessed individually, with decisions influenced by the specifics of each case.

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Uganda -

Uganda also doesn't have a formal extradition treaty with the US. Extradition cooperation is uncommon and depends on bilateral relations and the nature of the alleged offense.

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Mongolia -

Mongolia lacks an official extradition agreement with the US. However, cooperation may occur on a case-by-case basis, depending on the severity of the crime.

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Bahrain -

Bahrain doesn't have an extradition treaty with the US. However, given its strong diplomatic ties with Washington, extradition may be considered.

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Botswana -

Botswana has no official extradition treaty with the US. However, it may choose to cooperate on a case-by-case basis for serious crimes.

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Kuwait -

Kuwait has no formal extradition treaty with the US but may cooperate in high-priority cases due to strong diplomatic and military ties.

Sources: (U.S. News) (World Population Review) (Global Citizen Solutions) 

See also: Greenland among the most important US military bases in the world

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