How many countries were originally in NATO?
12
10
5
10
5
10
5
10
5
48
10
5
48
10
5
48
10
5
48
10
11
5
48
10
11
5
48
10
11
5
12
29
48
10
11
5
50
12
29
14
48
10
20
11
5
50
12
29
14
48
10
20
11
5
50
12
29
14
48
10
20
11
5
50
12
15
29
14
48
10
20
11
5
50
12
15
29
14
48
10
20
11
5
50
12
15
29
21
14
48
10
20
11
5
24
50
12
15
29
4
21
8
14
48
10
20
11
5
28
24
50
12
15
29
4
21
13
8
14
48
10
20
11
5
28
24
26
50
12
15
29
4
21
13
8
14
48
10
20
11
5
28
24
26
50
12
15
29
4
21
13
8
14
48
20
11
28
24
26
50
12
15
29
4
21
13
8
14
48
Four
19
20
11
28
24
26
50
12
15
29
4
21
25
13
8
14
48
Four
19
20
11
28
24
26
50
12
Four
10 countries
29 countries
11 countries
14 countries