How many countries are part of NATO?
30
5
3
4
5
3
4
5
3
4
5
3
4
5
3
4
5
3
4
5
3
6
4
5
3
6
4
5
3
6
2
4
5
3
6
7
2
4
5
3
6
7
2
4
5
3
13
6
7
2
4
1
5
3
13
6
7
2
4
1
5
28
3
13
10
6
7
2
4
1
5
28
3
12
13
10
6
7
2
4
11
8
1
5
28
3
12
13
10
6
7
2
4
11
8
1
5
28
3
12
13
10
6
7
2
27
67
4
11
8
1
14
5
28
3
12
13
10
6
7
2
27
9
4
11
8
1
14
5
67
28
3
12
13
10
6
7
2
27
9
4
11
8
1
14
5
25
28
3
12
13
10
6
7
67
2
27
9
4
11
8
1
14
25
28
12
77
13
10
6
7
2
27
9
50
67
11
8
1
14
25
28
12
66
13
10
6
23
7
2
16
27
9
77
50
29
11
66
77
66
77