Glossary entry (derived from question below)
English term or phrase:
fault lines
Portuguese translation:
fragilidades
English term
Brazil
Experienced and reliable translator
Native in: Portuguese 
Works in: English to Portuguese, Spanish to Portuguese, Portuguese to English
fault lines
The fault lines of imperfect peace deals are already showing
Evolution education may be poised to become another fault line of religious-political conflict, as creationist ideas are increasingly making their way into public school curricula
Disagreement intensifies into conflict as it is reinforced by the fault lines of religious identity.
Proposed translations
Brazil
EN-PTBR translator, 12 yrs of experience
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English
fragilidades
Brazil
IT Specialist • M.A. in Linguistics
Native in: Portuguese (Variant: Brazilian) 
Works in: English to Portuguese, Spanish to Portuguese, Portuguese to English, and 1 more.
limitações; pontos fracos
Traduziria como "limitações" ou "pontos fracos", com base na segunda definição do link abaixo:
https://www.collinsdictionary.com/dictionary/english/fault-l...
Agronomist, PhD | Technical Translation
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese
descontinuidade
"Eles criaram uma descontinuidade em termos da situação regulamentar .."
"A Europa continua sendo a principal descontinuidade no Partido Conservador."
Brazil
EN, SP, DE, IT, and PTBR
Native in: Portuguese (Variant: Brazilian)
Works in: Portuguese to English, Spanish to Portuguese, Portuguese to Spanish, and 4 more.
Problemas; falhas; deficiências
Brazil
Generalist, SDL TRADOS! Engagement!
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English
inconsistências
Canada
On time, professional and accurate
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English, English to Spanish, and 3 more.
pontos de atrito/tensão
Brazil
IT - Automotive - Marketing - Subtitling
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, French to Portuguese, Portuguese to English, and 16 more.
cavalo de batalha
Criando outro cavalo-de-batalha no conflito político-religioso...
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Note added at 1 hr (2020-06-30 18:56:13 GMT)
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(sem hífen com este significado)
Brazil
Expert in language service for HR
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Spanish to Portuguese, Portuguese
controvérsias/disputas
This fault line is what we call tightness versus looseness. Tight groups are defined by strict rules and social order, tradition and predictability. Loose groups eschew rules, welcome new ideas and embrace tolerance.
Brazil
The right one to take care of your text
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English
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