See the full list of the 25 most powerful militaries in the world

President Donald Trump has emphasized military might during his first year in office, but the US is not the only country seeking to expand its battlefield capacities. Between 2012 and 2016, more weapons were delivered than during any five-year period since 1990.

Arms sales indicate who is beefing up their armed forces, but head-to-head military comparisons are harder to come by. Global Firepower's 2017 Military Strength Ranking tries to fill that void by drawing on more than 50 factors to assign a Power Index score to 133 countries.

The ranking assesses the diversity of weapons held by each country and pays particular attention to the manpower available. The geography, logistical capacity, available natural resources, and the status of local industry are also taken into account.

While recognized nuclear powers receive a bonus, the nuclear stockpiles are not factored into the score.

Moreover, countries that are landlocked are not docked points for lacking a navy, though they are penalized for not having a merchant marine force.

Countries with navies are penalized if there is a lack of diversity in their naval assets.

NATO countries get a slight bonus because the alliance would theoretically share resources, but in general, a country's current political and military leadership was not considered.

"Balance is the key — a large, strong fighting force across land, sea and air backed by a resilient economy and defensible territory along with an efficient infrastructure — such qualities are those used to round out a particular nation's total fighting strength on paper," the ranking states.

Below, you can see the 25 most powerful militaries in the world:

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The most powerful militaries in the world
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The most powerful militaries in the world

25. Algeria

Power Index rating: 0.4366

Total population: 40,263,711

Total military personnel: 792,350

Total aircraft strength: 502

Fighter aircraft: 89

Combat tanks: 2,405

Total naval assets: 85

Defense budget: $10.6 billion

 REUTERS/Ramzi Boudina

24. Saudi Arabia

Power Index rating: 0.4302

Total population: 28,160,273

Total military personnel: 256,000

Total aircraft strength: 790

Fighter aircraft: 177

Combat tanks: 1,142

Total naval assets: 55

Defense budget: $56.7 billion

 REUTERS/Faisal Al Nasser

23. North Korea

Power Index rating: 0.4218

Total population: 25,115,311

Total military personnel: 6,445,000

Total aircraft strength: 944

Fighter aircraft: 458

Combat tanks: 5,025

Total naval assets: 967

Defense budget: $7.5 billion

KCNA/via REUTERS 

Soldiers from the Australian Army's 3rd Brigade step into the ocean during an amphibious assault landing on Langham Beach during the Talisman Saber joint military exercises between Australia and the United States in Queensland, northeast Australia, July 13, 2017. REUTERS/Jason Reed

21. Iran

Power Index rating: 0.3933

Total population: 82,801,633

Total military personnel: 934,000

Total aircraft strength: 477

Fighter aircraft: 137

Combat tanks: 1,616

Total naval assets: 398

Defense budget: $6.3 billion

( STR/AFP/Getty Images)

20. Thailand

Power Index rating: 0.3892

Total population: 68,200,824

Total military personnel: 627,425

Total aircraft strength: 555

Fighter aircraft: 76

Combat tanks: 737

Total naval assets: 81 (one aircraft carrier)

Defense budget: $5.4 billion

REUTERS/Soe Zeya Tun

19. Poland

Power Index rating: 0.3831

Total population: 38,523,261

Total military personnel: 184,650

Total aircraft strength: 465

Fighter aircraft: 99

Combat tanks: 1,065

Total naval assets: 83

Defense budget: $9.4 billion

 REUTERS/Kacper Pempel

18. Taiwan

Power Index rating: 0.3765

Total population: 23,464,787

Total military personnel: 1,932,500

Total aircraft strength: 850

Fighter aircraft: 286

Combat tanks: 2,005

Total naval assets: 87

Defense budget: $10.7 billion

REUTERS/Tyrone Siu

17. Brazil

Power Index rating: 0.3654

Total population: 205,823,665

Total military personnel: 1,987,000

Total aircraft strength: 697

Fighter aircraft: 43

Combat tanks: 469

Total naval assets: 110

Defense budget: $24.5 billion

 ( CARL DE SOUZA/AFP/Getty Images)

16. Vietnam

Power Index rating: 0.3587

Total population: 95,261,021

Total military personnel: 5,488,500

Total aircraft strength: 278

Fighter aircraft: 76

Combat 1,545

Total naval assets: 65

Defense budget: $3.4 billion

 REUTERS/Kham

15. Israel

Power Index rating: 0.3476

Total population: 8,174,527

Total military personnel: 718,250

Total aircraft strength: 652

Fighter aircraft: 243

Combat tanks: 2,620

Total naval assets: 65

Defense budget: $15.5 billion

 REUTERS/Mohamad Torokman

14. Indonesia

Power Index rating: 0.3347

Total population: 258,316,051

Total military personnel: 975,750

Total aircraft strength: 441

Fighter aircraft: 39

Combat tanks: 418

Total naval assets: 221

Defense budget: $6.9 billion

 REUTERS/Sigid Kurniawan/Antara Foto

13. Pakistan

Power Index rating: 0.3287

Total population: 201,995,540

Total military personnel: 919,000

Total aircraft strength: 951

Fighter aircraft: 301

Combat tanks: 2,924

Total naval assets: 197

Defense budget: $7 billion

 (RIZWAN TABASSUM/AFP/Getty Images)

12. South Korea

Power Index rating: 0.2741

Total population: 50,924,172

Total military personnel: 5,829,750

Total aircraft strength: 1,477

Fighter aircraft: 406

Combat tanks: 2,654

Total naval assets: 166 (one aircraft carrier)

Defense budget: $43.8 billion

 

(JUNG YEON-JE/AFP/Getty Images)

11. Italy

Power Index rating: 0.2694

Total population: 62,007,540

Total military personnel: 267,500

Total aircraft strength: 822

Fighter aircraft: 79

Combat tanks: 200

Total naval assets: 143 (two aircraft carriers)

Defense budget: $34 billion

 REUTERS/Max Rossi

10. Egypt

Power Index rating: 0.2676

Total population: 94,666,993

Total military personnel: 1,329,250

Total aircraft strength: 1,132

Fighter aircraft: 337

Combat tanks: 4,110

Total naval assets: 319 (two aircraft carriers)

Defense budget: $4.4 billion

 REUTERS/Amr Abdallah Dalsh

9. Germany

Power Index rating: 0.2609

Total population: 80,722,792

Total military personnel: 210,000

Total aircraft strength: 698

Fighter aircraft: 92

Combat tanks: 543

Total naval assets: 81

Defense budget: $39.2 billion

REUTERS/Fabian Bimmer

8. Turkey

Power Index rating: 0.2491

Total population: 80,274,604

Total military personnel: 743,415

Total aircraft strength: 1,018

Fighter aircraft: 207

Combat tanks: 2,445

Total naval assets: 194

Defense budget: $8.2 billion

 REUTERS/Murad Sezer

7. Japan

Power Index rating: 0.2137

Total population: 126,702,133

Total military personnel: 311,875

Total aircraft strength: 1,594

Fighter aircraft: 288

Combat tanks: 700

Total naval assets: 131 (four aircraft carriers)

Defense budget: $43.8 billion

 REUTERS/Kim Kyung-Hoon 

6. United Kingdom

Power Index rating: 0.2131

Total population: 64,430,428

Total military personnel: 232,675

Total aircraft strength: 856

Fighter aircraft: 88

Combat tanks 249

Total naval assets: 76 (two aircraft carriers)

Defense budget: $45.7 billion

 (Photo by Joe Giddens/PA Images via Getty Images)

5. France

Power Index rating: 0.1914

Total population: 66,836,154

Total military personnel: 387,635

Total aicraft strength: 1,305

Fighter aircraft: 296

Combat tanks: 406

Total naval assets: 118 (four aircraft carriers)

Defense budget: $35 billion

 REUTERS/Philippe Wojazer 

4. India

Power Index rating: 0.1593

Total population: 1,266,883,598

Total military personnel: 4,207,250

Total aircraft strength: 2,102

Fighter aircraft: 676

Combat tanks: 4,426

Total naval assets: 295 (three aircraft carriers)

Defense budget: $51 billion

REUTERS/Danish Ismail

3. China

Power Index rating: 0.0945

Total population: 1,373,541,278

Total military personnel: 3,712,500

Total aircraft strength: 2,955

Fighter aircraft: 1,271

Combat tanks: 6,457

Total naval assets: 714 (one aircraft carrier)

Defense budget: $161.7 billion

 ( VCG/VCG via Getty Images)

2. Russia

Power Index rating: 0.0929

Total population: 142,355,415

Total military personnel: 3,371,027

Total aircraft strength: 3,794

Fighter aircraft: 806

Combat tanks: 20,216

Total naval assets: 352 (one aircraft carrier)

Defense budget: $44.6 billion

 ( Mikhail Pochuyev\TASS via Getty Images)

1. United States

Power Index rating: 0.0857

Total population: 323,995,528

Total military personnel: 2,363,675

Total aircraft: 13,762

Fighter aircraft: 2,296

Combat tanks: 5,884

Total naval assets: 415 (19 aircraft carriers)

Defense budget: $587.8 billion

 USAF/Airman Eugene Oliver/Handout via REUTERS. 

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